diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 3794b090c..e6d03c53f 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -30,8 +30,8 @@ variables:
     value: .NETCoreValidation
 
   # Fill in missing channel name variables.
-  - name: Net_5_Preview3_Channel_Id
-    value: 739
+  - name: Net_5_Preview5_Channel_Id
+    value: 857
 
   # Produce test-signed build for PR and Public builds
   - ${{ if or(eq(variables['System.TeamProject'], 'public'), in(variables['Build.Reason'], 'PullRequest')) }}:
@@ -104,11 +104,11 @@ stages:
           storage: master
           public: true
 
-      - dependsOn: Net5_Preview3_Publish
+      - dependsOn: Net5_Preview5_Publish
         channel:
-          name: .NET 5 Preview 3
-          bar: Net_5_Preview3_Channel_Id
-          storage: release/5.0-preview3
+          name: .NET 5 Preview 5
+          bar: Net_5_Preview5_Channel_Id
+          storage: release/5.0-preview5
           public: true
 
       - dependsOn: General_Testing_Publish
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index b9359f78b..68eae45e8 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -140,25 +140,25 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="5.0.0-beta.20201.2">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="5.0.0-beta.20280.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>bce0a98620c1c5a110b2bba9912f3d5929069c6b</Sha>
+      <Sha>fef373440d604c428950236fbc2b99ce0df368a9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="5.0.0-beta.20201.2">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Feed" Version="5.0.0-beta.20280.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>bce0a98620c1c5a110b2bba9912f3d5929069c6b</Sha>
+      <Sha>fef373440d604c428950236fbc2b99ce0df368a9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.Packaging" Version="5.0.0-beta.20201.2">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.Packaging" Version="5.0.0-beta.20280.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>bce0a98620c1c5a110b2bba9912f3d5929069c6b</Sha>
+      <Sha>fef373440d604c428950236fbc2b99ce0df368a9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk" Version="5.0.0-beta.20201.2">
+    <Dependency Name="Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk" Version="5.0.0-beta.20280.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>bce0a98620c1c5a110b2bba9912f3d5929069c6b</Sha>
+      <Sha>fef373440d604c428950236fbc2b99ce0df368a9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.VersionTools.Tasks" Version="5.0.0-beta.20201.2">
+    <Dependency Name="Microsoft.DotNet.VersionTools.Tasks" Version="5.0.0-beta.20280.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>bce0a98620c1c5a110b2bba9912f3d5929069c6b</Sha>
+      <Sha>fef373440d604c428950236fbc2b99ce0df368a9</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/Versions.props b/eng/Versions.props
index d1899ecf0..0a56c2be3 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -42,9 +42,9 @@
   <!--Package versions-->
   <PropertyGroup>
     <!-- arcade -->
-    <MicrosoftDotNetBuildTasksFeedVersion>5.0.0-beta.20201.2</MicrosoftDotNetBuildTasksFeedVersion>
-    <MicrosoftDotNetBuildTasksPackagingVersion>5.0.0-beta.20201.2</MicrosoftDotNetBuildTasksPackagingVersion>
-    <MicrosoftDotNetVersionToolsTasksVersion>5.0.0-beta.20201.2</MicrosoftDotNetVersionToolsTasksVersion>
+    <MicrosoftDotNetBuildTasksFeedVersion>5.0.0-beta.20280.1</MicrosoftDotNetBuildTasksFeedVersion>
+    <MicrosoftDotNetBuildTasksPackagingVersion>5.0.0-beta.20280.1</MicrosoftDotNetBuildTasksPackagingVersion>
+    <MicrosoftDotNetVersionToolsTasksVersion>5.0.0-beta.20280.1</MicrosoftDotNetVersionToolsTasksVersion>
     <!-- core-setup -->
     <MicrosoftNETCoreAppRefVersion>5.0.0-preview.6.20279.7</MicrosoftNETCoreAppRefVersion>
     <MicrosoftNETCoreAppRuntimewinx64Version>5.0.0-preview.6.20279.7</MicrosoftNETCoreAppRuntimewinx64Version>
diff --git a/eng/common/SetupNugetSources.ps1 b/eng/common/SetupNugetSources.ps1
index a5a1e711d..c3c473eb8 100644
--- a/eng/common/SetupNugetSources.ps1
+++ b/eng/common/SetupNugetSources.ps1
@@ -83,7 +83,7 @@ function AddCredential($creds, $source, $username, $password) {
     $passwordElement.SetAttribute("value", $Password)
 }
 
-function InsertMaestroPrivateFeedCredentials($Sources, $Creds, $Password) {
+function InsertMaestroPrivateFeedCredentials($Sources, $Creds, $Username, $Password) {
     $maestroPrivateSources = $Sources.SelectNodes("add[contains(@key,'darc-int')]")
 
     Write-Host "Inserting credentials for $($maestroPrivateSources.Count) Maestro's private feeds."
@@ -123,19 +123,21 @@ if ($creds -eq $null) {
     $doc.DocumentElement.AppendChild($creds) | Out-Null
 }
 
+$userName = "dn-bot"
+
 # Insert credential nodes for Maestro's private feeds
-InsertMaestroPrivateFeedCredentials -Sources $sources -Creds $creds -Password $Password
+InsertMaestroPrivateFeedCredentials -Sources $sources -Creds $creds -Username $userName -Password $Password
 
 $dotnet3Source = $sources.SelectSingleNode("add[@key='dotnet3']")
 if ($dotnet3Source -ne $null) {
-    AddPackageSource -Sources $sources -SourceName "dotnet3-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3-internal/nuget/v2" -Creds $creds -Username "dn-bot" -Password $Password
-    AddPackageSource -Sources $sources -SourceName "dotnet3-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3-internal-transport/nuget/v2" -Creds $creds -Username "dn-bot" -Password $Password
+    AddPackageSource -Sources $sources -SourceName "dotnet3-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3-internal/nuget/v2" -Creds $creds -Username $userName -Password $Password
+    AddPackageSource -Sources $sources -SourceName "dotnet3-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3-internal-transport/nuget/v2" -Creds $creds -Username $userName -Password $Password
 }
 
 $dotnet31Source = $sources.SelectSingleNode("add[@key='dotnet3.1']")
 if ($dotnet31Source -ne $null) {
-    AddPackageSource -Sources $sources -SourceName "dotnet3.1-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal/nuget/v2" -Creds $creds -Username "dn-bot" -Password $Password
-    AddPackageSource -Sources $sources -SourceName "dotnet3.1-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-transport/nuget/v2" -Creds $creds -Username "dn-bot" -Password $Password
+    AddPackageSource -Sources $sources -SourceName "dotnet3.1-internal" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal/nuget/v2" -Creds $creds -Username $userName -Password $Password
+    AddPackageSource -Sources $sources -SourceName "dotnet3.1-internal-transport" -SourceEndPoint "https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-transport/nuget/v2" -Creds $creds -Username $userName -Password $Password
 }
 
 $doc.Save($filename)
diff --git a/eng/common/build.ps1 b/eng/common/build.ps1
index 0c4861dc8..67ee6d28d 100644
--- a/eng/common/build.ps1
+++ b/eng/common/build.ps1
@@ -20,6 +20,7 @@ Param(
   [switch] $publish,
   [switch] $clean,
   [switch][Alias('bl')]$binaryLog,
+  [switch][Alias('nobl')]$excludeCIBinarylog,
   [switch] $ci,
   [switch] $prepareMachine,
   [switch] $help,
@@ -58,6 +59,7 @@ function Print-Usage() {
   Write-Host "Advanced settings:"
   Write-Host "  -projects <value>       Semi-colon delimited list of sln/proj's to build. Globbing is supported (*.sln)"
   Write-Host "  -ci                     Set when running on CI server"
+  Write-Host "  -excludeCIBinarylog     Don't output binary log (short: -nobl)"
   Write-Host "  -prepareMachine         Prepare machine for CI run, clean up processes after build"
   Write-Host "  -warnAsError <value>    Sets warnaserror msbuild parameter ('true' or 'false')"
   Write-Host "  -msbuildEngine <value>  Msbuild engine to use to run build ('dotnet', 'vs', or unspecified)."
@@ -86,7 +88,7 @@ function Build {
   InitializeCustomToolset
 
   $bl = if ($binaryLog) { '/bl:' + (Join-Path $LogDir 'Build.binlog') } else { '' }
-  $platformArg = if ($platform) { "/p:TargetArchitecture=$platform" } else { '' }
+  $platformArg = if ($platform) { "/p:Platform=$platform" } else { '' }
 
   if ($projects) {
     # Re-assign properties to a new variable because PowerShell doesn't let us append properties directly for unclear reasons.
@@ -134,7 +136,9 @@ try {
   }
 
   if ($ci) {
-    $binaryLog = $true
+    if (-not $excludeCIBinarylog) {
+      $binaryLog = $true
+    }
     $nodeReuse = $false
   }
 
diff --git a/eng/common/build.sh b/eng/common/build.sh
index 36f9aa046..6d7c5a1f6 100644
--- a/eng/common/build.sh
+++ b/eng/common/build.sh
@@ -32,6 +32,7 @@ usage()
   echo "Advanced settings:"
   echo "  --projects <value>       Project or solution file(s) to build"
   echo "  --ci                     Set when running on CI server"
+  echo "  --excludeCIBinarylog     Don't output binary log (short: -nobl)"
   echo "  --prepareMachine         Prepare machine for CI run, clean up processes after build"
   echo "  --nodeReuse <value>      Sets nodereuse msbuild parameter ('true' or 'false')"
   echo "  --warnAsError <value>    Sets warnaserror msbuild parameter ('true' or 'false')"
@@ -68,6 +69,7 @@ clean=false
 warn_as_error=true
 node_reuse=true
 binary_log=false
+exclude_ci_binary_log=false
 pipelines_log=false
 
 projects=''
@@ -98,6 +100,9 @@ while [[ $# > 0 ]]; do
     -binarylog|-bl)
       binary_log=true
       ;;
+    -excludeCIBinarylog|-nobl)
+      exclude_ci_binary_log=true
+      ;;
     -pipelineslog|-pl)
       pipelines_log=true
       ;;
@@ -156,8 +161,10 @@ done
 
 if [[ "$ci" == true ]]; then
   pipelines_log=true
-  binary_log=true
   node_reuse=false
+  if [[ "$exclude_ci_binary_log" == false ]]; then
+    binary_log=true
+  fi
 fi
 
 . "$scriptroot/tools.sh"
diff --git a/eng/common/cross/build-rootfs.sh b/eng/common/cross/build-rootfs.sh
index 2cdd82d30..d780fefb5 100644
--- a/eng/common/cross/build-rootfs.sh
+++ b/eng/common/cross/build-rootfs.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 usage()
 {
     echo "Usage: $0 [BuildArch] [CodeName] [lldbx.y] [--skipunmount] --rootfsdir <directory>]"
@@ -15,6 +17,8 @@ __CodeName=xenial
 __CrossDir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
 __InitialDir=$PWD
 __BuildArch=arm
+__AlpineArch=armv7
+__QEMUArch=arm
 __UbuntuArch=armhf
 __UbuntuRepo="http://ports.ubuntu.com/"
 __LLDB_Package="liblldb-3.9-dev"
@@ -26,9 +30,10 @@ __UbuntuPackages="build-essential"
 __AlpinePackages="alpine-base"
 __AlpinePackages+=" build-base"
 __AlpinePackages+=" linux-headers"
-__AlpinePackagesEdgeTesting=" lldb-dev"
-__AlpinePackagesEdgeMain=" llvm9-libs"
+__AlpinePackagesEdgeCommunity=" lldb-dev"
+__AlpinePackagesEdgeMain=" llvm10-libs"
 __AlpinePackagesEdgeMain+=" python3"
+__AlpinePackagesEdgeMain+=" libedit"
 
 # symlinks fixer
 __UbuntuPackages+=" symlinks"
@@ -55,12 +60,11 @@ __AlpinePackages+=" openssl-dev"
 __AlpinePackages+=" zlib-dev"
 
 __FreeBSDBase="12.1-RELEASE"
-__FreeBSDPkg="1.10.5"
+__FreeBSDPkg="1.12.0"
 __FreeBSDPackages="libunwind"
 __FreeBSDPackages+=" icu"
 __FreeBSDPackages+=" libinotify"
 __FreeBSDPackages+=" lttng-ust"
-__FreeBSDPackages+=" llvm-90"
 __FreeBSDPackages+=" krb5"
 
 __UnprocessedBuildArgs=
@@ -78,7 +82,7 @@ while :; do
         arm)
             __BuildArch=arm
             __UbuntuArch=armhf
-            __AlpineArch=armhf
+            __AlpineArch=armv7
             __QEMUArch=arm
             ;;
         arm64)
@@ -205,7 +209,7 @@ fi
 
 if [ -d "$__RootfsDir" ]; then
     if [ $__SkipUnmount == 0 ]; then
-        umount $__RootfsDir/*
+        umount $__RootfsDir/* || true
     fi
     rm -rf $__RootfsDir
 fi
@@ -231,9 +235,9 @@ if [[ "$__CodeName" == "alpine" ]]; then
       add $__AlpinePackagesEdgeMain
 
     $__ApkToolsDir/apk-tools-$__ApkToolsVersion/apk \
-      -X http://dl-cdn.alpinelinux.org/alpine/edge/testing \
+      -X http://dl-cdn.alpinelinux.org/alpine/edge/community \
       -U --allow-untrusted --root $__RootfsDir --arch $__AlpineArch --initdb \
-      add $__AlpinePackagesEdgeTesting
+      add $__AlpinePackagesEdgeCommunity
 
     rm -r $__ApkToolsDir
 elif [[ "$__CodeName" == "freebsd" ]]; then
@@ -246,11 +250,13 @@ elif [[ "$__CodeName" == "freebsd" ]]; then
     # get and build package manager
     wget -O -  https://github.com/freebsd/pkg/archive/${__FreeBSDPkg}.tar.gz  |  tar -C $__RootfsDir/tmp -zxf -
     cd $__RootfsDir/tmp/pkg-${__FreeBSDPkg}
-    ./autogen.sh && ./configure --prefix=$__RootfsDir/host && make install
+    # needed for install to succeed
+    mkdir -p $__RootfsDir/host/etc
+    ./autogen.sh && ./configure --prefix=$__RootfsDir/host && make && make install
     rm -rf $__RootfsDir/tmp/pkg-${__FreeBSDPkg}
     # install packages we need.
-    $__RootfsDir/host/sbin/pkg -r $__RootfsDir -C $__RootfsDir/usr/local/etc/pkg.conf update
-    $__RootfsDir/host/sbin/pkg -r $__RootfsDir -C $__RootfsDir/usr/local/etc/pkg.conf install --yes $__FreeBSDPackages
+    INSTALL_AS_USER=$(whoami) $__RootfsDir/host/sbin/pkg -r $__RootfsDir -C $__RootfsDir/usr/local/etc/pkg.conf update
+    INSTALL_AS_USER=$(whoami) $__RootfsDir/host/sbin/pkg -r $__RootfsDir -C $__RootfsDir/usr/local/etc/pkg.conf install --yes $__FreeBSDPackages
 elif [[ -n $__CodeName ]]; then
     qemu-debootstrap --arch $__UbuntuArch $__CodeName $__RootfsDir $__UbuntuRepo
     cp $__CrossDir/$__BuildArch/sources.list.$__CodeName $__RootfsDir/etc/apt/sources.list
@@ -260,7 +266,7 @@ elif [[ -n $__CodeName ]]; then
     chroot $__RootfsDir symlinks -cr /usr
 
     if [ $__SkipUnmount == 0 ]; then
-        umount $__RootfsDir/*
+        umount $__RootfsDir/* || true
     fi
 
     if [[ "$__BuildArch" == "arm" && "$__CodeName" == "trusty" ]]; then
diff --git a/eng/common/internal/Tools.csproj b/eng/common/internal/Tools.csproj
index 1a39a7ef3..f46d5efe2 100644
--- a/eng/common/internal/Tools.csproj
+++ b/eng/common/internal/Tools.csproj
@@ -4,6 +4,7 @@
   <PropertyGroup>
     <TargetFramework>net472</TargetFramework>
     <ImportDirectoryBuildTargets>false</ImportDirectoryBuildTargets>
+    <AutomaticallyUseReferenceAssemblyPackages>false</AutomaticallyUseReferenceAssemblyPackages>
   </PropertyGroup>
   <ItemGroup>
     <!-- Clear references, the SDK may add some depending on UsuingToolXxx settings, but we only want to restore the following -->
diff --git a/eng/common/native/CommonLibrary.psm1 b/eng/common/native/CommonLibrary.psm1
index 41416862d..d7d1a6510 100644
--- a/eng/common/native/CommonLibrary.psm1
+++ b/eng/common/native/CommonLibrary.psm1
@@ -145,9 +145,12 @@ function Get-File {
     New-Item -path $DownloadDirectory -force -itemType "Directory" | Out-Null
   }
 
+  $TempPath = "$Path.tmp"
   if (Test-Path -IsValid -Path $Uri) {
-    Write-Verbose "'$Uri' is a file path, copying file to '$Path'"
-    Copy-Item -Path $Uri -Destination $Path
+    Write-Verbose "'$Uri' is a file path, copying temporarily to '$TempPath'"
+    Copy-Item -Path $Uri -Destination $TempPath
+    Write-Verbose "Moving temporary file to '$Path'"
+    Move-Item -Path $TempPath -Destination $Path
     return $?
   }
   else {
@@ -157,8 +160,10 @@ function Get-File {
     while($Attempt -Lt $DownloadRetries)
     {
       try {
-        Invoke-WebRequest -UseBasicParsing -Uri $Uri -OutFile $Path
-        Write-Verbose "Downloaded to '$Path'"
+        Invoke-WebRequest -UseBasicParsing -Uri $Uri -OutFile $TempPath
+        Write-Verbose "Downloaded to temporary location '$TempPath'"
+        Move-Item -Path $TempPath -Destination $Path
+        Write-Verbose "Moved temporary file to '$Path'"
         return $True
       }
       catch {
@@ -359,16 +364,21 @@ function Expand-Zip {
         return $False
       }
     }
-    if (-Not (Test-Path $OutputDirectory)) {
-      New-Item -path $OutputDirectory -Force -itemType "Directory" | Out-Null
+
+    $TempOutputDirectory = Join-Path "$(Split-Path -Parent $OutputDirectory)" "$(Split-Path -Leaf $OutputDirectory).tmp"
+    if (Test-Path $TempOutputDirectory) {
+      Remove-Item $TempOutputDirectory -Force -Recurse
     }
+    New-Item -Path $TempOutputDirectory -Force -ItemType "Directory" | Out-Null
 
     Add-Type -assembly "system.io.compression.filesystem"
-    [io.compression.zipfile]::ExtractToDirectory("$ZipPath", "$OutputDirectory")
+    [io.compression.zipfile]::ExtractToDirectory("$ZipPath", "$TempOutputDirectory")
     if ($? -Eq $False) {
       Write-Error "Unable to extract '$ZipPath'"
       return $False
     }
+
+    Move-Item -Path $TempOutputDirectory -Destination $OutputDirectory
   }
   catch {
     Write-Host $_
diff --git a/eng/common/native/find-native-compiler.sh b/eng/common/native/find-native-compiler.sh
new file mode 100644
index 000000000..aed19d07d
--- /dev/null
+++ b/eng/common/native/find-native-compiler.sh
@@ -0,0 +1,121 @@
+#!/usr/bin/env bash
+#
+# This file locates the native compiler with the given name and version and sets the environment variables to locate it.
+#
+
+source="${BASH_SOURCE[0]}"
+
+# resolve $SOURCE until the file is no longer a symlink
+while [[ -h $source ]]; do
+  scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
+  source="$(readlink "$source")"
+
+  # if $source was a relative symlink, we need to resolve it relative to the path where the
+  # symlink file was located
+  [[ $source != /* ]] && source="$scriptroot/$source"
+done
+scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
+
+if [ $# -lt 0 ]
+then
+  echo "Usage..."
+  echo "find-native-compiler.sh <compiler> <compiler major version> <compiler minor version>"
+  echo "Specify the name of compiler (clang or gcc)."
+  echo "Specify the major version of compiler."
+  echo "Specify the minor version of compiler."
+  exit 1
+fi
+
+. $scriptroot/../pipeline-logging-functions.sh
+
+compiler="$1"
+cxxCompiler="$compiler++"
+majorVersion="$2"
+minorVersion="$3"
+
+if [ "$compiler" = "gcc" ]; then cxxCompiler="g++"; fi
+
+check_version_exists() {
+    desired_version=-1
+
+    # Set up the environment to be used for building with the desired compiler.
+    if command -v "$compiler-$1.$2" > /dev/null; then
+        desired_version="-$1.$2"
+    elif command -v "$compiler$1$2" > /dev/null; then
+        desired_version="$1$2"
+    elif command -v "$compiler-$1$2" > /dev/null; then
+        desired_version="-$1$2"
+    fi
+
+    echo "$desired_version"
+}
+
+if [ -z "$CLR_CC" ]; then
+
+    # Set default versions
+    if [ -z "$majorVersion" ]; then
+        # note: gcc (all versions) and clang versions higher than 6 do not have minor version in file name, if it is zero.
+        if [ "$compiler" = "clang" ]; then versions=( 9 8 7 6.0 5.0 4.0 3.9 3.8 3.7 3.6 3.5 )
+        elif [ "$compiler" = "gcc" ]; then versions=( 9 8 7 6 5 4.9 ); fi
+
+        for version in "${versions[@]}"; do
+            parts=(${version//./ })
+            desired_version="$(check_version_exists "${parts[0]}" "${parts[1]}")"
+            if [ "$desired_version" != "-1" ]; then majorVersion="${parts[0]}"; break; fi
+        done
+
+        if [ -z "$majorVersion" ]; then
+            if command -v "$compiler" > /dev/null; then
+                if [ "$(uname)" != "Darwin" ]; then
+                    Write-PipelineTelemetryError -category "Build" -type "warning" "Specific version of $compiler not found, falling back to use the one in PATH."
+                fi
+                export CC="$(command -v "$compiler")"
+                export CXX="$(command -v "$cxxCompiler")"
+            else
+                Write-PipelineTelemetryError -category "Build" "No usable version of $compiler found."
+                exit 1
+            fi
+        else
+            if [ "$compiler" = "clang" ] && [ "$majorVersion" -lt 5 ]; then
+                if [ "$build_arch" = "arm" ] || [ "$build_arch" = "armel" ]; then
+                    if command -v "$compiler" > /dev/null; then
+                        Write-PipelineTelemetryError -category "Build" -type "warning" "Found clang version $majorVersion which is not supported on arm/armel architectures, falling back to use clang from PATH."
+                        export CC="$(command -v "$compiler")"
+                        export CXX="$(command -v "$cxxCompiler")"
+                    else
+                        Write-PipelineTelemetryError -category "Build" "Found clang version $majorVersion which is not supported on arm/armel architectures, and there is no clang in PATH."
+                        exit 1
+                    fi
+                fi
+            fi
+        fi
+    else
+        desired_version="$(check_version_exists "$majorVersion" "$minorVersion")"
+        if [ "$desired_version" = "-1" ]; then
+            Write-PipelineTelemetryError -category "Build" "Could not find specific version of $compiler: $majorVersion $minorVersion."
+            exit 1
+        fi
+    fi
+
+    if [ -z "$CC" ]; then
+        export CC="$(command -v "$compiler$desired_version")"
+        export CXX="$(command -v "$cxxCompiler$desired_version")"
+        if [ -z "$CXX" ]; then export CXX="$(command -v "$cxxCompiler")"; fi
+    fi
+else
+    if [ ! -f "$CLR_CC" ]; then
+        Write-PipelineTelemetryError -category "Build" "CLR_CC is set but path '$CLR_CC' does not exist"
+        exit 1
+    fi
+    export CC="$CLR_CC"
+    export CXX="$CLR_CXX"
+fi
+
+if [ -z "$CC" ]; then
+   Write-PipelineTelemetryError -category "Build" "Unable to find $compiler."
+    exit 1
+fi
+
+export CCC_CC="$CC"
+export CCC_CXX="$CXX"
+export SCAN_BUILD_COMMAND="$(command -v "scan-build$desired_version")"
diff --git a/eng/common/performance/perfhelixpublish.proj b/eng/common/performance/perfhelixpublish.proj
index cf5941e1b..1db5e8a84 100644
--- a/eng/common/performance/perfhelixpublish.proj
+++ b/eng/common/performance/perfhelixpublish.proj
@@ -6,6 +6,7 @@
     <Python>py -3</Python>
     <CoreRun>%HELIX_CORRELATION_PAYLOAD%\Core_Root\CoreRun.exe</CoreRun>
     <BaselineCoreRun>%HELIX_CORRELATION_PAYLOAD%\Baseline_Core_Root\CoreRun.exe</BaselineCoreRun>
+    
     <HelixPreCommands>$(HelixPreCommands);call %HELIX_CORRELATION_PAYLOAD%\performance\tools\machine-setup.cmd;set PYTHONPATH=%HELIX_WORKITEM_PAYLOAD%\scripts%3B%HELIX_WORKITEM_PAYLOAD%</HelixPreCommands>
     <ArtifactsDirectory>%HELIX_CORRELATION_PAYLOAD%\artifacts\BenchmarkDotNet.Artifacts</ArtifactsDirectory>
     <BaselineArtifactsDirectory>%HELIX_CORRELATION_PAYLOAD%\artifacts\BenchmarkDotNet.Artifacts_Baseline</BaselineArtifactsDirectory>
@@ -40,6 +41,13 @@
     <XMLResults>$HELIX_WORKITEM_ROOT/testResults.xml</XMLResults>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(MonoDotnet)' == 'true' and '$(AGENT_OS)' == 'Windows_NT'">
+    <CoreRunArgument>--corerun %HELIX_CORRELATION_PAYLOAD%\dotnet-mono\shared\Microsoft.NETCore.App\5.0.0\corerun.exe</CoreRunArgument>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(MonoDotnet)' == 'true' and '$(AGENT_OS)' != 'Windows_NT'">
+    <CoreRunArgument>--corerun $(BaseDirectory)/dotnet-mono/shared/Microsoft.NETCore.App/5.0.0/corerun</CoreRunArgument>
+  </PropertyGroup>
+
   <PropertyGroup Condition="'$(UseCoreRun)' == 'true'">
     <CoreRunArgument>--corerun $(CoreRun)</CoreRunArgument>
   </PropertyGroup>
diff --git a/eng/common/performance/performance-setup.ps1 b/eng/common/performance/performance-setup.ps1
index 1763a1a97..31a99e490 100644
--- a/eng/common/performance/performance-setup.ps1
+++ b/eng/common/performance/performance-setup.ps1
@@ -3,7 +3,7 @@ Param(
     [string] $CoreRootDirectory,
     [string] $BaselineCoreRootDirectory,
     [string] $Architecture="x64",
-    [string] $Framework="netcoreapp5.0",
+    [string] $Framework="net5.0",
     [string] $CompilationMode="Tiered",
     [string] $Repository=$env:BUILD_REPOSITORY_NAME,
     [string] $Branch=$env:BUILD_SOURCEBRANCH,
@@ -12,8 +12,12 @@ Param(
     [string] $RunCategories="Libraries Runtime",
     [string] $Csproj="src\benchmarks\micro\MicroBenchmarks.csproj",
     [string] $Kind="micro",
+    [switch] $LLVM,
+    [switch] $MonoInterpreter,
+    [switch] $MonoAOT, 
     [switch] $Internal,
     [switch] $Compare,
+    [string] $MonoDotnet="",
     [string] $Configurations="CompilationMode=$CompilationMode RunKind=$Kind"
 )
 
@@ -31,7 +35,8 @@ $HelixSourcePrefix = "pr"
 
 $Queue = "Windows.10.Amd64.ClientRS4.DevEx.15.8.Open"
 
-if ($Framework.StartsWith("netcoreapp")) {
+# TODO: Implement a better logic to determine if Framework is .NET Core or >= .NET 5.
+if ($Framework.StartsWith("netcoreapp") -or ($Framework -eq "net5.0")) {
     $Queue = "Windows.10.Amd64.ClientRS5.Open"
 }
 
@@ -49,6 +54,21 @@ if ($Internal) {
     $HelixSourcePrefix = "official"
 }
 
+if($MonoDotnet -ne "")
+{
+    $Configurations += " LLVM=$LLVM MonoInterpreter=$MonoInterpreter MonoAOT=$MonoAOT"
+    if($ExtraBenchmarkDotNetArguments -eq "")
+    {
+        #FIX ME: We need to block these tests as they don't run on mono for now
+        $ExtraBenchmarkDotNetArguments = "--exclusion-filter *Perf_Image* *Perf_NamedPipeStream*"
+    }
+    else
+    {
+        #FIX ME: We need to block these tests as they don't run on mono for now
+        $ExtraBenchmarkDotNetArguments += " --exclusion-filter *Perf_Image* *Perf_NamedPipeStream*"
+    }
+}
+
 # FIX ME: This is a workaround until we get this from the actual pipeline
 $CommonSetupArguments="--channel master --queue $Queue --build-number $BuildNumber --build-configs $Configurations --architecture $Architecture"
 $SetupArguments = "--repository https://github.com/$Repository --branch $Branch --get-perf-hash --commit-sha $CommitSha $CommonSetupArguments"
@@ -69,6 +89,13 @@ else {
     git clone --branch master --depth 1 --quiet https://github.com/dotnet/performance $PerformanceDirectory
 }
 
+if($MonoDotnet -ne "")
+{
+    $UsingMono = "true"
+    $MonoDotnetPath = (Join-Path $PayloadDirectory "dotnet-mono")
+    Move-Item -Path $MonoDotnet -Destination $MonoDotnetPath
+}
+
 if ($UseCoreRun) {
     $NewCoreRoot = (Join-Path $PayloadDirectory "Core_Root")
     Move-Item -Path $CoreRootDirectory -Destination $NewCoreRoot
@@ -104,6 +131,7 @@ Write-PipelineSetVariable -Name 'UseCoreRun' -Value "$UseCoreRun" -IsMultiJobVar
 Write-PipelineSetVariable -Name 'UseBaselineCoreRun' -Value "$UseBaselineCoreRun" -IsMultiJobVariable $false
 Write-PipelineSetVariable -Name 'RunFromPerfRepo' -Value "$RunFromPerformanceRepo" -IsMultiJobVariable $false
 Write-PipelineSetVariable -Name 'Compare' -Value "$Compare" -IsMultiJobVariable $false
+Write-PipelineSetVariable -Name 'MonoDotnet' -Value "$UsingMono" -IsMultiJobVariable $false
 
 # Helix Arguments
 Write-PipelineSetVariable -Name 'Creator' -Value "$Creator" -IsMultiJobVariable $false
diff --git a/eng/common/performance/performance-setup.sh b/eng/common/performance/performance-setup.sh
index b9eecf94b..9409e4d85 100644
--- a/eng/common/performance/performance-setup.sh
+++ b/eng/common/performance/performance-setup.sh
@@ -4,7 +4,7 @@ source_directory=$BUILD_SOURCESDIRECTORY
 core_root_directory=
 baseline_core_root_directory=
 architecture=x64
-framework=netcoreapp5.0
+framework=net5.0
 compilation_mode=tiered
 repository=$BUILD_REPOSITORY_NAME
 branch=$BUILD_SOURCEBRANCH
@@ -12,13 +12,18 @@ commit_sha=$BUILD_SOURCEVERSION
 build_number=$BUILD_BUILDNUMBER
 internal=false
 compare=false
+mono_dotnet=
 kind="micro"
+llvm=false
+monointerpreter=false
+monoaot=false
 run_categories="Libraries Runtime"
 csproj="src\benchmarks\micro\MicroBenchmarks.csproj"
 configurations="CompliationMode=$compilation_mode RunKind=$kind"
 run_from_perf_repo=false
 use_core_run=true
 use_baseline_core_run=true
+using_mono=false
 
 while (($# > 0)); do
   lowerI="$(echo $1 | awk '{print tolower($0)}')"
@@ -65,6 +70,7 @@ while (($# > 0)); do
       ;;
     --kind)
       kind=$2
+      configurations="CompliationMode=$compilation_mode RunKind=$kind"
       shift 2
       ;;
     --runcategories)
@@ -79,6 +85,22 @@ while (($# > 0)); do
       internal=true
       shift 1
       ;;
+    --llvm)
+      llvm=true
+      shift 1
+      ;;
+    --monointerpreter)
+      monointerpreter=true
+      shift 1
+      ;;
+    --monoaot)
+      monoaot=true
+      shift 1
+      ;;
+    --monodotnet)
+      mono_dotnet=$2
+      shift 2
+      ;;
     --compare)
       compare=true
       shift 1
@@ -107,6 +129,7 @@ while (($# > 0)); do
       echo "  --kind <value>                 Related to csproj. The kind of benchmarks that should be run. Defaults to micro"
       echo "  --runcategories <value>        Related to csproj. Categories of benchmarks to run. Defaults to \"coreclr corefx\""
       echo "  --internal                     If the benchmarks are running as an official job."
+      echo "  --monodotnet                   Pass the path to the mono dotnet for mono performance testing."
       echo ""
       exit 0
       ;;
@@ -164,6 +187,10 @@ if [[ "$internal" == true ]]; then
     fi
 fi
 
+if [[ "$mono_dotnet" != "" ]]; then
+    configurations="$configurations LLVM=$llvm MonoInterpreter=$monointerpreter MonoAOT=$monoaot"
+fi
+
 common_setup_arguments="--channel master --queue $queue --build-number $build_number --build-configs $configurations --architecture $architecture"
 setup_arguments="--repository https://github.com/$repository --branch $branch --get-perf-hash --commit-sha $commit_sha $common_setup_arguments"
 
@@ -186,6 +213,12 @@ else
     mv $docs_directory $workitem_directory
 fi
 
+if [[ "$mono_dotnet" != "" ]]; then
+    using_mono=true
+    mono_dotnet_path=$payload_directory/dotnet-mono
+    mv $mono_dotnet $mono_dotnet_path
+fi
+
 if [[ "$use_core_run" = true ]]; then
     new_core_root=$payload_directory/Core_Root
     mv $core_root_directory $new_core_root
@@ -221,3 +254,4 @@ Write-PipelineSetVariable -name "HelixSourcePrefix" -value "$helix_source_prefix
 Write-PipelineSetVariable -name "Kind" -value "$kind" -is_multi_job_variable false
 Write-PipelineSetVariable -name "_BuildConfig" -value "$architecture.$kind.$framework" -is_multi_job_variable false
 Write-PipelineSetVariable -name "Compare" -value "$compare" -is_multi_job_variable false
+Write-PipelineSetVariable -name "MonoDotnet" -value "$using_mono" -is_multi_job_variable false
diff --git a/eng/common/pipeline-logging-functions.sh b/eng/common/pipeline-logging-functions.sh
index 33c3f0d80..6cd0a3400 100644
--- a/eng/common/pipeline-logging-functions.sh
+++ b/eng/common/pipeline-logging-functions.sh
@@ -31,26 +31,21 @@ function Write-PipelineTelemetryError {
     return
   fi
 
-  message="(NETCORE_ENGINEERING_TELEMETRY=$telemetry_category) $message"
-  function_args+=("$message")
   if [[ $force == true ]]; then
     function_args+=("-force")
   fi
-
-  Write-PipelineTaskError $function_args
+  message="(NETCORE_ENGINEERING_TELEMETRY=$telemetry_category) $message"
+  function_args+=("$message")
+  Write-PipelineTaskError ${function_args[@]}
 }
 
 function Write-PipelineTaskError {
-  if [[ $force != true ]] && [[ "$ci" != true ]]; then
-    echo "$@" >&2
-    return
-  fi
-
   local message_type="error"
   local sourcepath=''
   local linenumber=''
   local columnnumber=''
   local error_code=''
+  local force=false
 
   while [[ $# -gt 0 ]]; do
     opt="$(echo "${1/#--/-}" | awk '{print tolower($0)}')"
@@ -75,6 +70,9 @@ function Write-PipelineTaskError {
         error_code=$2
         shift
         ;;
+      -force|-f)
+        force=true
+        ;;
       *)
         break
         ;;
@@ -83,6 +81,11 @@ function Write-PipelineTaskError {
     shift
   done
 
+  if [[ $force != true ]] && [[ "$ci" != true ]]; then
+    echo "$@" >&2
+    return
+  fi
+
   local message="##vso[task.logissue"
 
   message="$message type=$message_type"
diff --git a/eng/common/post-build/check-channel-consistency.ps1 b/eng/common/post-build/check-channel-consistency.ps1
index 7e6618d64..38abc5392 100644
--- a/eng/common/post-build/check-channel-consistency.ps1
+++ b/eng/common/post-build/check-channel-consistency.ps1
@@ -6,13 +6,18 @@ param(
 try {
   . $PSScriptRoot\post-build-utils.ps1
 
+  if ($PromoteToChannels -eq "") {
+    Write-PipelineTaskError -Type 'warning' -Message "This build won't publish assets as it's not configured to any Maestro channel. If that wasn't intended use Darc to configure a default channel using add-default-channel for this branch or to promote it to a channel using add-build-to-channel. See https://github.com/dotnet/arcade/blob/master/Documentation/Darc.md#assigning-an-individual-build-to-a-channel for more info."
+    ExitWithExitCode 0
+  }
+
   # Check that every channel that Maestro told to promote the build to 
   # is available in YAML
   $PromoteToChannelsIds = $PromoteToChannels -split "\D" | Where-Object { $_ }
 
   foreach ($id in $PromoteToChannelsIds) {
     if (($id -ne 0) -and ($id -notin $AvailableChannelIds)) {
-      Write-PipelineTaskError -Type 'warning' -Message "Channel $id is not present in the post-build YAML configuration!"
+      Write-PipelineTaskError -Message "Channel $id is not present in the post-build YAML configuration! This is an error scenario. Please contact @dnceng."
     }
   }
 
diff --git a/eng/common/post-build/publish-using-darc.ps1 b/eng/common/post-build/publish-using-darc.ps1
new file mode 100644
index 000000000..d22eb439c
--- /dev/null
+++ b/eng/common/post-build/publish-using-darc.ps1
@@ -0,0 +1,71 @@
+param(
+  [Parameter(Mandatory=$true)][int] $BuildId,
+  [Parameter(Mandatory=$true)][string] $AzdoToken,
+  [Parameter(Mandatory=$true)][string] $MaestroToken,
+  [Parameter(Mandatory=$false)][string] $MaestroApiEndPoint = 'https://maestro-prod.westus2.cloudapp.azure.com',
+  [Parameter(Mandatory=$true)][string] $WaitPublishingFinish,
+  [Parameter(Mandatory=$true)][string] $EnableSourceLinkValidation,
+  [Parameter(Mandatory=$true)][string] $EnableSigningValidation,
+  [Parameter(Mandatory=$true)][string] $EnableNugetValidation,
+  [Parameter(Mandatory=$true)][string] $PublishInstallersAndChecksums,
+  [Parameter(Mandatory=$false)][string] $ArtifactsPublishingAdditionalParameters,
+  [Parameter(Mandatory=$false)][string] $SigningValidationAdditionalParameters
+)
+
+try {
+  . $PSScriptRoot\post-build-utils.ps1
+  . $PSScriptRoot\..\darc-init.ps1
+
+  $optionalParams = [System.Collections.ArrayList]::new()
+
+  if ("" -ne $ArtifactsPublishingAdditionalParameters) {
+    $optionalParams.Add("artifact-publishing-parameters") | Out-Null
+    $optionalParams.Add($ArtifactsPublishingAdditionalParameters) | Out-Null
+  }
+
+  if ("false" -eq $WaitPublishingFinish) {
+    $optionalParams.Add("--no-wait") | Out-Null
+  }
+
+  if ("true" -eq $PublishInstallersAndChecksums) {
+    $optionalParams.Add("--publish-installers-and-checksums") | Out-Null
+  }
+
+  if ("true" -eq $EnableNugetValidation) {
+    $optionalParams.Add("--validate-nuget") | Out-Null
+  }
+
+  if ("true" -eq $EnableSourceLinkValidation) {
+    $optionalParams.Add("--validate-sourcelinkchecksums") | Out-Null
+  }
+
+  if ("true" -eq $EnableSigningValidation) {
+    $optionalParams.Add("--validate-signingchecksums") | Out-Null
+
+    if ("" -ne $SigningValidationAdditionalParameters) {
+      $optionalParams.Add("--signing-validation-parameters") | Out-Null
+      $optionalParams.Add($SigningValidationAdditionalParameters) | Out-Null
+    }
+  }
+
+  & darc add-build-to-channel `
+	--id $buildId `
+	--default-channels `
+	--source-branch master `
+	--azdev-pat $AzdoToken `
+	--bar-uri $MaestroApiEndPoint `
+	--password $MaestroToken `
+	@optionalParams
+
+  if ($LastExitCode -ne 0) {
+    Write-Host "Problems using Darc to promote build ${buildId} to default channels. Stopping execution..."
+    exit 1
+  }
+
+  Write-Host 'done.'
+} 
+catch {
+  Write-Host $_
+  Write-PipelineTelemetryError -Category 'PromoteBuild' -Message "There was an error while trying to publish build '$BuildId' to default channels."
+  ExitWithExitCode 1
+}
diff --git a/eng/common/post-build/symbols-validation.ps1 b/eng/common/post-build/symbols-validation.ps1
index f7cfe986d..e108bf6c5 100644
--- a/eng/common/post-build/symbols-validation.ps1
+++ b/eng/common/post-build/symbols-validation.ps1
@@ -1,72 +1,30 @@
 param(
   [Parameter(Mandatory=$true)][string] $InputPath,              # Full path to directory where NuGet packages to be checked are stored
   [Parameter(Mandatory=$true)][string] $ExtractPath,            # Full path to directory where the packages will be extracted during validation
-  [Parameter(Mandatory=$true)][string] $DotnetSymbolVersion     # Version of dotnet symbol to use
+  [Parameter(Mandatory=$true)][string] $DotnetSymbolVersion,    # Version of dotnet symbol to use
+  [Parameter(Mandatory=$false)][switch] $ContinueOnError,       # If we should keep checking symbols after an error
+  [Parameter(Mandatory=$false)][switch] $Clean                  # Clean extracted symbols directory after checking symbols
 )
 
-function FirstMatchingSymbolDescriptionOrDefault {
-  param( 
-    [string] $FullPath,                  # Full path to the module that has to be checked
-    [string] $TargetServerParam,         # Parameter to pass to `Symbol Tool` indicating the server to lookup for symbols
-    [string] $SymbolsPath
-  )
-
-  $FileName = [System.IO.Path]::GetFileName($FullPath)
-  $Extension = [System.IO.Path]::GetExtension($FullPath)
-
-  # Those below are potential symbol files that the `dotnet symbol` might
-  # return. Which one will be returned depend on the type of file we are
-  # checking and which type of file was uploaded.
-
-  # The file itself is returned
-  $SymbolPath = $SymbolsPath + '\' + $FileName
-
-  # PDB file for the module
-  $PdbPath = $SymbolPath.Replace($Extension, '.pdb')
-
-  # PDB file for R2R module (created by crossgen)
-  $NGenPdb = $SymbolPath.Replace($Extension, '.ni.pdb')
-
-  # DBG file for a .so library
-  $SODbg = $SymbolPath.Replace($Extension, '.so.dbg')
+# Maximum number of jobs to run in parallel
+$MaxParallelJobs = 6
 
-  # DWARF file for a .dylib
-  $DylibDwarf = $SymbolPath.Replace($Extension, '.dylib.dwarf')
- 
-  $dotnetSymbolExe = "$env:USERPROFILE\.dotnet\tools"
-  $dotnetSymbolExe = Resolve-Path "$dotnetSymbolExe\dotnet-symbol.exe"
-
-  & $dotnetSymbolExe --symbols --modules --windows-pdbs $TargetServerParam $FullPath -o $SymbolsPath | Out-Null
-
-  if (Test-Path $PdbPath) {
-    return 'PDB'
-  }
-  elseif (Test-Path $NGenPdb) {
-    return 'NGen PDB'
-  }
-  elseif (Test-Path $SODbg) {
-    return 'DBG for SO'
-  }  
-  elseif (Test-Path $DylibDwarf) {
-    return 'Dwarf for Dylib'
-  }  
-  elseif (Test-Path $SymbolPath) {
-    return 'Module'
-  }
-  else {
-    return $null
-  }
-}
+# Wait time between check for system load
+$SecondsBetweenLoadChecks = 10
 
-function CountMissingSymbols {
+$CountMissingSymbols = {
   param( 
     [string] $PackagePath          # Path to a NuGet package
   )
 
+  . $using:PSScriptRoot\..\tools.ps1
+
+  Add-Type -AssemblyName System.IO.Compression.FileSystem
+
   # Ensure input file exist
   if (!(Test-Path $PackagePath)) {
     Write-PipelineTaskError "Input file does not exist: $PackagePath"
-    ExitWithExitCode 1
+    return 1
   }
   
   # Extensions for which we'll look for symbols
@@ -77,23 +35,85 @@ function CountMissingSymbols {
 
   $PackageId = [System.IO.Path]::GetFileNameWithoutExtension($PackagePath)
   $PackageGuid = New-Guid
-  $ExtractPath = Join-Path -Path $ExtractPath -ChildPath $PackageGuid
+  $ExtractPath = Join-Path -Path $using:ExtractPath -ChildPath $PackageGuid
   $SymbolsPath = Join-Path -Path $ExtractPath -ChildPath 'Symbols'
   
-  [System.IO.Compression.ZipFile]::ExtractToDirectory($PackagePath, $ExtractPath)
+  try {
+    [System.IO.Compression.ZipFile]::ExtractToDirectory($PackagePath, $ExtractPath)
+  }
+  catch {
+    Write-Host "Something went wrong extracting $PackagePath"
+    Write-Host $_
+    return -1
+  }
 
   Get-ChildItem -Recurse $ExtractPath |
     Where-Object {$RelevantExtensions -contains $_.Extension} |
     ForEach-Object {
-      if ($_.FullName -Match '\\ref\\') {
-        Write-Host "`t Ignoring reference assembly file " $_.FullName
+      $FileName = $_.FullName
+      if ($FileName -Match '\\ref\\') {
+        Write-Host "`t Ignoring reference assembly file " $FileName
         return
       }
 
-      $SymbolsOnMSDL = FirstMatchingSymbolDescriptionOrDefault $_.FullName '--microsoft-symbol-server' $SymbolsPath
-      $SymbolsOnSymWeb = FirstMatchingSymbolDescriptionOrDefault $_.FullName '--internal-server' $SymbolsPath
+      $FirstMatchingSymbolDescriptionOrDefault = {
+      param( 
+        [string] $FullPath,                  # Full path to the module that has to be checked
+        [string] $TargetServerParam,         # Parameter to pass to `Symbol Tool` indicating the server to lookup for symbols
+        [string] $SymbolsPath
+      )
+
+      $FileName = [System.IO.Path]::GetFileName($FullPath)
+      $Extension = [System.IO.Path]::GetExtension($FullPath)
+
+      # Those below are potential symbol files that the `dotnet symbol` might
+      # return. Which one will be returned depend on the type of file we are
+      # checking and which type of file was uploaded.
+
+      # The file itself is returned
+      $SymbolPath = $SymbolsPath + '\' + $FileName
+
+      # PDB file for the module
+      $PdbPath = $SymbolPath.Replace($Extension, '.pdb')
+
+      # PDB file for R2R module (created by crossgen)
+      $NGenPdb = $SymbolPath.Replace($Extension, '.ni.pdb')
+
+      # DBG file for a .so library
+      $SODbg = $SymbolPath.Replace($Extension, '.so.dbg')
+
+      # DWARF file for a .dylib
+      $DylibDwarf = $SymbolPath.Replace($Extension, '.dylib.dwarf')
+    
+      $dotnetSymbolExe = "$env:USERPROFILE\.dotnet\tools"
+      $dotnetSymbolExe = Resolve-Path "$dotnetSymbolExe\dotnet-symbol.exe"
+
+      & $dotnetSymbolExe --symbols --modules --windows-pdbs $TargetServerParam $FullPath -o $SymbolsPath | Out-Null
 
-      Write-Host -NoNewLine "`t Checking file " $_.FullName "... "
+      if (Test-Path $PdbPath) {
+        return 'PDB'
+      }
+      elseif (Test-Path $NGenPdb) {
+        return 'NGen PDB'
+      }
+      elseif (Test-Path $SODbg) {
+        return 'DBG for SO'
+      }  
+      elseif (Test-Path $DylibDwarf) {
+        return 'Dwarf for Dylib'
+      }  
+      elseif (Test-Path $SymbolPath) {
+        return 'Module'
+      }
+      else {
+        return $null
+      }
+    }
+
+      $SymbolsOnMSDL = & $FirstMatchingSymbolDescriptionOrDefault $FileName '--microsoft-symbol-server' $SymbolsPath
+      $SymbolsOnSymWeb = & $FirstMatchingSymbolDescriptionOrDefault $FileName '--internal-server' $SymbolsPath
+
+      Write-Host -NoNewLine "`t Checking file " $FileName "... "
   
       if ($SymbolsOnMSDL -ne $null -and $SymbolsOnSymWeb -ne $null) {
         Write-Host "Symbols found on MSDL ($SymbolsOnMSDL) and SymWeb ($SymbolsOnSymWeb)"
@@ -115,6 +135,15 @@ function CountMissingSymbols {
       }
     }
   
+  if ($using:Clean) {
+    Remove-Item $ExtractPath -Recurse -Force
+  }
+
+  if ($MissingSymbols -ne 0)
+  {
+    Write-PipelineTelemetryError -Category 'CheckSymbols' -Message "Missing symbols for $MissingSymbols modules in the package $FileName"
+  }
+  
   Pop-Location
 
   return $MissingSymbols
@@ -125,9 +154,12 @@ function CheckSymbolsAvailable {
     Remove-Item $ExtractPath -Force  -Recurse -ErrorAction SilentlyContinue
   }
 
+  $TotalFailures = 0
+
   Get-ChildItem "$InputPath\*.nupkg" |
     ForEach-Object {
       $FileName = $_.Name
+      $FullName = $_.FullName
 
       # These packages from Arcade-Services include some native libraries that
       # our current symbol uploader can't handle. Below is a workaround until
@@ -144,15 +176,39 @@ function CheckSymbolsAvailable {
       }
 
       Write-Host "Validating $FileName "
-      $Status = CountMissingSymbols "$InputPath\$FileName"
 
-      if ($Status -ne 0) {
-        Write-PipelineTelemetryError -Category 'CheckSymbols' -Message "Missing symbols for $Status modules in the package $FileName"
-        ExitWithExitCode $exitCode
+      Start-Job -ScriptBlock $CountMissingSymbols -ArgumentList $FullName | Out-Null
+
+      $NumJobs = @(Get-Job -State 'Running').Count
+      Write-Host $NumJobs
+
+      while ($NumJobs -ge $MaxParallelJobs) {
+        Write-Host "There are $NumJobs validation jobs running right now. Waiting $SecondsBetweenLoadChecks seconds to check again."
+        sleep $SecondsBetweenLoadChecks
+        $NumJobs = @(Get-Job -State 'Running').Count
       }
 
+      foreach ($Job in @(Get-Job -State 'Completed')) {
+        Receive-Job -Id $Job.Id
+      }
       Write-Host
     }
+
+  foreach ($Job in @(Get-Job)) {
+    $jobResult = Wait-Job -Id $Job.Id | Receive-Job
+
+    if ($jobResult -ne '0') {
+      $TotalFailures++
+    }
+  }
+
+  if ($TotalFailures -gt 0) {
+    Write-PipelineTelemetryError -Category 'CheckSymbols' -Message "Symbols missing for $TotalFailures packages"
+    ExitWithExitCode 1
+  }
+  else {
+    Write-Host "All symbols validated!"
+  }
 }
 
 function InstallDotnetSymbol {
@@ -174,11 +230,13 @@ function InstallDotnetSymbol {
 
 try {
   . $PSScriptRoot\post-build-utils.ps1
-
-  Add-Type -AssemblyName System.IO.Compression.FileSystem
   
   InstallDotnetSymbol
 
+  foreach ($Job in @(Get-Job)) {
+    Remove-Job -Id $Job.Id
+  }
+
   CheckSymbolsAvailable
 }
 catch {
diff --git a/eng/common/sdk-task.ps1 b/eng/common/sdk-task.ps1
index 3872af59b..32ad5c7e9 100644
--- a/eng/common/sdk-task.ps1
+++ b/eng/common/sdk-task.ps1
@@ -57,6 +57,24 @@ try {
     ExitWithExitCode 1
   }
 
+  if( $msbuildEngine -eq "vs") {
+    # Ensure desktop MSBuild is available for sdk tasks.
+    if( -not ($GlobalJson.tools.PSObject.Properties.Name -contains "vs" )) {
+      $GlobalJson.tools | Add-Member -Name "vs" -Value (ConvertFrom-Json "{ `"version`": `"16.5`" }") -MemberType NoteProperty
+    }
+    if( -not ($GlobalJson.tools.PSObject.Properties.Name -match "xcopy-msbuild" )) {
+      $GlobalJson.tools | Add-Member -Name "xcopy-msbuild" -Value "16.5.0-alpha" -MemberType NoteProperty
+    }
+    if ($GlobalJson.tools."xcopy-msbuild".Trim() -ine "none") {
+        $xcopyMSBuildToolsFolder = InitializeXCopyMSBuild $GlobalJson.tools."xcopy-msbuild" -install $true
+    }
+    if ($xcopyMSBuildToolsFolder -eq $null) {
+      throw 'Unable to get xcopy downloadable version of msbuild'
+    }
+
+    $global:_MSBuildExe = "$($xcopyMSBuildToolsFolder)\MSBuild\Current\Bin\MSBuild.exe"
+  }
+
   $taskProject = GetSdkTaskProject $task
   if (!(Test-Path $taskProject)) {
     Write-PipelineTelemetryError -Category 'Build' -Message "Unknown task: $task" -ForegroundColor Red
diff --git a/eng/common/sdl/execute-all-sdl-tools.ps1 b/eng/common/sdl/execute-all-sdl-tools.ps1
index b7f61f9a2..b681d797c 100644
--- a/eng/common/sdl/execute-all-sdl-tools.ps1
+++ b/eng/common/sdl/execute-all-sdl-tools.ps1
@@ -24,7 +24,8 @@ Param(
   [string] $TsaIterationPath,                                                                    # Optional: only needed if TsaOnboard is true; the iteration path where TSA will file bugs in AzDO; TSA is the automated framework used to upload test results as bugs.
   [string] $GuardianLoggerLevel='Standard',                                                      # Optional: the logger level for the Guardian CLI; options are Trace, Verbose, Standard, Warning, and Error
   [string[]] $CrScanAdditionalRunConfigParams,                                                   # Optional: Additional Params to custom build a CredScan run config in the format @("xyz:abc","sdf:1")
-  [string[]] $PoliCheckAdditionalRunConfigParams                                                 # Optional: Additional Params to custom build a Policheck run config in the format @("xyz:abc","sdf:1")
+  [string[]] $PoliCheckAdditionalRunConfigParams,                                                # Optional: Additional Params to custom build a Policheck run config in the format @("xyz:abc","sdf:1")
+  [bool] $BreakOnFailure=$False                                                                  # Optional: Fail the build if there were errors during the run
 )
 
 try {
@@ -106,6 +107,11 @@ try {
       ExitWithExitCode 1
     }
   }
+
+  if ($BreakOnFailure) {
+    Write-Host "Failing the build in case of breaking results..."
+    & $guardianCliLocation break
+  }
 }
 catch {
   Write-Host $_.ScriptStackTrace
diff --git a/eng/common/sdl/extract-artifact-packages.ps1 b/eng/common/sdl/extract-artifact-packages.ps1
index 9e5f3cb43..7f28d9c59 100644
--- a/eng/common/sdl/extract-artifact-packages.ps1
+++ b/eng/common/sdl/extract-artifact-packages.ps1
@@ -63,7 +63,7 @@ try {
           }
     }
     catch {
-      Write-Host $_.ScriptStackTrace
+      Write-Host $_
       Write-PipelineTelemetryError -Force -Category 'Sdl' -Message $_
       ExitWithExitCode 1
     }
@@ -74,7 +74,7 @@ try {
   Measure-Command { ExtractArtifacts }
 }
 catch {
-  Write-Host $_.ScriptStackTrace
+  Write-Host $_
   Write-PipelineTelemetryError -Force -Category 'Sdl' -Message $_
   ExitWithExitCode 1
 }
diff --git a/eng/common/sdl/init-sdl.ps1 b/eng/common/sdl/init-sdl.ps1
index 1a91bbbc5..a68bf0b88 100644
--- a/eng/common/sdl/init-sdl.ps1
+++ b/eng/common/sdl/init-sdl.ps1
@@ -24,7 +24,7 @@ $ProgressPreference = 'SilentlyContinue'
 # Construct basic auth from AzDO access token; construct URI to the repository's gdn folder stored in that repository; construct location of zip file
 $encodedPat = [Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes(":$AzureDevOpsAccessToken"))
 $escapedRepository = [Uri]::EscapeDataString("/$Repository/$BranchName/.gdn")
-$uri = "https://dev.azure.com/dnceng/internal/_apis/git/repositories/sdl-tool-cfg/Items?path=$escapedRepository&versionDescriptor[versionOptions]=0&`$format=zip&api-version=5.0-preview.1"
+$uri = "https://dev.azure.com/dnceng/internal/_apis/git/repositories/sdl-tool-cfg/Items?path=$escapedRepository&versionDescriptor[versionOptions]=0&`$format=zip&api-version=5.0"
 $zipFile = "$WorkingDirectory/gdn.zip"
 
 Add-Type -AssemblyName System.IO.Compression.FileSystem
diff --git a/eng/common/sdl/packages.config b/eng/common/sdl/packages.config
index 256ffbfb9..968b39bef 100644
--- a/eng/common/sdl/packages.config
+++ b/eng/common/sdl/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Microsoft.Guardian.Cli" version="0.7.2"/>
+  <package id="Microsoft.Guardian.Cli.win10-x64" version="0.20.1"/>
 </packages>
diff --git a/eng/common/templates/job/execute-sdl.yml b/eng/common/templates/job/execute-sdl.yml
index 640f2b04e..c64c4f568 100644
--- a/eng/common/templates/job/execute-sdl.yml
+++ b/eng/common/templates/job/execute-sdl.yml
@@ -6,6 +6,7 @@ parameters:
   # 'continueOnError', the parameter value is not correctly picked up.
   # This can also be remedied by the caller (post-build.yml) if it does not use a nested parameter
   sdlContinueOnError: false                                    # optional: determines whether to continue the build if the step errors;
+  downloadArtifacts: true                                      # optional: determines if the artifacts should be dowloaded
   dependsOn: ''                                                # Optional: dependencies of the job
   artifactNames: ''                                            # Optional: patterns supplied to DownloadBuildArtifacts
                                                                # Usage:
@@ -31,8 +32,20 @@ jobs:
   steps:
   - checkout: self
     clean: true
-  - ${{ if ne(parameters.artifactNames, '') }}:
-    - ${{ each artifactName in parameters.artifactNames }}:
+  - ${{ if ne(parameters.downloadArtifacts, 'false')}}:
+    - ${{ if ne(parameters.artifactNames, '') }}:
+      - ${{ each artifactName in parameters.artifactNames }}:
+        - task: DownloadBuildArtifacts@0
+          displayName: Download Build Artifacts
+          inputs:
+            buildType: specific
+            buildVersionToDownload: specific
+            project: $(AzDOProjectName)
+            pipeline: $(AzDOPipelineId)
+            buildId: $(AzDOBuildId)
+            artifactName: ${{ artifactName }}
+            downloadPath: $(Build.ArtifactStagingDirectory)\artifacts
+    - ${{ if eq(parameters.artifactNames, '') }}:
       - task: DownloadBuildArtifacts@0
         displayName: Download Build Artifacts
         inputs:
@@ -41,20 +54,9 @@ jobs:
           project: $(AzDOProjectName)
           pipeline: $(AzDOPipelineId)
           buildId: $(AzDOBuildId)
-          artifactName: ${{ artifactName }}
+          downloadType: specific files
+          itemPattern: "**"
           downloadPath: $(Build.ArtifactStagingDirectory)\artifacts
-  - ${{ if eq(parameters.artifactNames, '') }}:
-    - task: DownloadBuildArtifacts@0
-      displayName: Download Build Artifacts
-      inputs:
-        buildType: specific
-        buildVersionToDownload: specific
-        project: $(AzDOProjectName)
-        pipeline: $(AzDOPipelineId)
-        buildId: $(AzDOBuildId)
-        downloadType: specific files
-        itemPattern: "**"
-        downloadPath: $(Build.ArtifactStagingDirectory)\artifacts
   - powershell: eng/common/sdl/extract-artifact-packages.ps1
       -InputPath $(Build.ArtifactStagingDirectory)\artifacts\BlobArtifacts
       -ExtractPath $(Build.ArtifactStagingDirectory)\artifacts\BlobArtifacts
@@ -81,7 +83,7 @@ jobs:
       continueOnError: ${{ parameters.sdlContinueOnError }}
   - ${{ if eq(parameters.overrideParameters, '') }}:
     - powershell: eng/common/sdl/execute-all-sdl-tools.ps1
-        -GuardianPackageName Microsoft.Guardian.Cli.0.7.2
+        -GuardianPackageName Microsoft.Guardian.Cli.win10-x64.0.20.1
         -NugetPackageDirectory $(Build.SourcesDirectory)\.packages
         -AzureDevOpsAccessToken $(dn-bot-dotnet-build-rw-code-rw)
         ${{ parameters.additionalParameters }}
diff --git a/eng/common/templates/job/job.yml b/eng/common/templates/job/job.yml
index 536c15c46..c08bb416d 100644
--- a/eng/common/templates/job/job.yml
+++ b/eng/common/templates/job/job.yml
@@ -24,8 +24,9 @@ parameters:
   enablePublishBuildAssets: false
   enablePublishTestResults: false
   enablePublishUsingPipelines: false
+  useBuildManifest: false
   mergeTestResults: false
-  testRunTitle: $(AgentOsName)-$(BuildConfiguration)-xunit
+  testRunTitle: ''
   name: ''
   preSteps: []
   runAsPublic: false
@@ -196,7 +197,7 @@ jobs:
         testResultsFormat: 'xUnit'
         testResultsFiles: '*.xml' 
         searchFolder: '$(Build.SourcesDirectory)/artifacts/TestResults/$(_BuildConfig)'
-        testRunTitle: ${{ parameters.testRunTitle }}
+        testRunTitle: ${{ coalesce(parameters.testRunTitle, parameters.name, '$(System.JobName)') }}-xunit
         mergeTestResults: ${{ parameters.mergeTestResults }}
       continueOnError: true
       condition: always()
@@ -218,3 +219,12 @@ jobs:
         ArtifactName: AssetManifests
       continueOnError: ${{ parameters.continueOnError }}
       condition: and(succeeded(), eq(variables['_DotNetPublishToBlobFeed'], 'true'))
+
+  - ${{ if eq(parameters.useBuildManifest, true) }}:
+    - task: PublishBuildArtifacts@1
+      displayName: Publish Build Manifest
+      inputs:
+        PathToPublish: '$(Build.SourcesDirectory)/artifacts/log/$(_BuildConfig)/manifest.props'
+        PublishLocation: Container
+        ArtifactName: BuildManifests
+      continueOnError: ${{ parameters.continueOnError }}
diff --git a/eng/common/templates/post-build/channels/generic-internal-channel.yml b/eng/common/templates/post-build/channels/generic-internal-channel.yml
index dde27800c..258ba4b77 100644
--- a/eng/common/templates/post-build/channels/generic-internal-channel.yml
+++ b/eng/common/templates/post-build/channels/generic-internal-channel.yml
@@ -23,7 +23,7 @@ stages:
   - job: publish_symbols
     displayName: Symbol Publishing
     dependsOn: setupMaestroVars
-    condition: or(contains(dependencies.setupMaestroVars.outputs['setReleaseVars.InitialChannels'], format('[{0}]', ${{ parameters.channelId }} )), eq(dependencies.setupMaestroVars.outputs['setReleaseVars.PromoteToMaestroChannelId'], ${{ parameters.channelId }}))
+    condition: contains(dependencies.setupMaestroVars.outputs['setReleaseVars.TargetChannels'], format('[{0}]', ${{ parameters.channelId }} ))
     variables:
       - group: DotNet-Symbol-Server-Pats
       - name: AzDOProjectName
@@ -96,7 +96,7 @@ stages:
         value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
       - name: AzDOBuildId
         value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-    condition: or(contains(dependencies.setupMaestroVars.outputs['setReleaseVars.InitialChannels'], format('[{0}]', ${{ parameters.channelId }} )), eq(dependencies.setupMaestroVars.outputs['setReleaseVars.PromoteToMaestroChannelId'], ${{ parameters.channelId }}))
+    condition: contains(dependencies.setupMaestroVars.outputs['setReleaseVars.TargetChannels'], format('[{0}]', ${{ parameters.channelId }} ))
     pool:
       vmImage: 'windows-2019'
     steps:
diff --git a/eng/common/templates/post-build/channels/generic-public-channel.yml b/eng/common/templates/post-build/channels/generic-public-channel.yml
index 08853ec45..bf98d990e 100644
--- a/eng/common/templates/post-build/channels/generic-public-channel.yml
+++ b/eng/common/templates/post-build/channels/generic-public-channel.yml
@@ -25,7 +25,7 @@ stages:
   - job: publish_symbols
     displayName: Symbol Publishing
     dependsOn: setupMaestroVars
-    condition: or(contains(dependencies.setupMaestroVars.outputs['setReleaseVars.InitialChannels'], format('[{0}]', ${{ parameters.channelId }} )), eq(dependencies.setupMaestroVars.outputs['setReleaseVars.PromoteToMaestroChannelId'], ${{ parameters.channelId }}))
+    condition: contains(dependencies.setupMaestroVars.outputs['setReleaseVars.TargetChannels'], format('[{0}]', ${{ parameters.channelId }} ))
     variables:
       - group: DotNet-Symbol-Server-Pats
       - name: AzDOProjectName
@@ -99,7 +99,7 @@ stages:
         value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
       - name: ArtifactsCategory
         value: ${{ coalesce(variables._DotNetArtifactsCategory, '.NETCore') }}
-    condition: or(contains(dependencies.setupMaestroVars.outputs['setReleaseVars.InitialChannels'], format('[{0}]', ${{ parameters.channelId }} )), eq(dependencies.setupMaestroVars.outputs['setReleaseVars.PromoteToMaestroChannelId'], ${{ parameters.channelId }}))
+    condition: contains(dependencies.setupMaestroVars.outputs['setReleaseVars.TargetChannels'], format('[{0}]', ${{ parameters.channelId }} ))
     pool:
       vmImage: 'windows-2019'
     steps:
diff --git a/eng/common/templates/post-build/common-variables.yml b/eng/common/templates/post-build/common-variables.yml
index 867f37cd8..c99fd7503 100644
--- a/eng/common/templates/post-build/common-variables.yml
+++ b/eng/common/templates/post-build/common-variables.yml
@@ -63,7 +63,7 @@ variables:
   - name: MaestroApiAccessToken
     value: $(MaestroAccessToken)
   - name: MaestroApiVersion
-    value: "2019-01-16"
+    value: "2020-02-20"
 
   - name: SourceLinkCLIVersion
     value: 3.0.0
diff --git a/eng/common/templates/post-build/post-build.yml b/eng/common/templates/post-build/post-build.yml
index fbab4cb5d..75890b373 100644
--- a/eng/common/templates/post-build/post-build.yml
+++ b/eng/common/templates/post-build/post-build.yml
@@ -1,4 +1,13 @@
 parameters:
+  # When set to true the publishing templates from the repo will be used
+  # otherwise Darc add-build-to-channel will be used to trigger the promotion pipeline
+  inline: true
+
+  # Only used if inline==false. When set to true will stall the current build until
+  # the Promotion Pipeline build finishes. Otherwise, the current build continue 
+  # execution concurrently with the promotion build.
+  waitPublishingFinish: true
+
   enableSourceLinkValidation: false
   enableSigningValidation: true
   enableSymbolValidation: false
@@ -9,12 +18,14 @@ parameters:
     continueOnError: false
     params: ''
     artifactNames: ''
+    downloadArtifacts: true
 
   # These parameters let the user customize the call to sdk-task.ps1 for publishing
   # symbols & general artifacts as well as for signing validation
   symbolPublishingAdditionalParameters: ''
   artifactsPublishingAdditionalParameters: ''
   signingValidationAdditionalParameters: ''
+  useBuildManifest: false
 
   # Which stages should finish execution before post-build stages start
   validateDependsOn:
@@ -35,348 +46,436 @@ parameters:
   NETCoreExperimentalChannelId: 562
   NetEngServicesIntChannelId: 678
   NetEngServicesProdChannelId: 679
-  Net5Preview2ChannelId: 738
-  Net5Preview3ChannelId: 739
+  Net5Preview5ChannelId: 857
+  Net5Preview6ChannelId: 1013
+  Net5Preview7ChannelId: 1014
   NetCoreSDK313xxChannelId: 759
   NetCoreSDK313xxInternalChannelId: 760
+  NetCoreSDK314xxChannelId: 921
+  NetCoreSDK314xxInternalChannelId: 922
   
 stages:
-- stage: Validate
-  dependsOn: ${{ parameters.validateDependsOn }}
-  displayName: Validate
-  variables:
-    - template: common-variables.yml
-  jobs:
-  - template: setup-maestro-vars.yml
-
-  - job:
-    displayName: Post-build Checks
-    dependsOn: setupMaestroVars
-    variables:
-      - name: InitialChannels
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.InitialChannels'] ]
-      - name: PromoteToMaestroChannelId
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.PromoteToMaestroChannelId'] ]
-    pool:
-      vmImage: 'windows-2019'
-    steps:
-      - task: PowerShell@2
-        displayName: Maestro Channels Consistency
-        inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/post-build/check-channel-consistency.ps1
-          arguments: -PromoteToChannels "$(InitialChannels)[$(PromoteToMaestroChannelId)]"
-            -AvailableChannelIds ${{parameters.NetEngLatestChannelId}},${{parameters.NetEngValidationChannelId}},${{parameters.NetDev5ChannelId}},${{parameters.GeneralTestingChannelId}},${{parameters.NETCoreToolingDevChannelId}},${{parameters.NETCoreToolingReleaseChannelId}},${{parameters.NETInternalToolingChannelId}},${{parameters.NETCoreExperimentalChannelId}},${{parameters.NetEngServicesIntChannelId}},${{parameters.NetEngServicesProdChannelId}},${{parameters.Net5Preview2ChannelId}},${{parameters.Net5Preview3ChannelId}},${{parameters.NetCoreSDK313xxChannelId}},${{parameters.NetCoreSDK313xxInternalChannelId}}
-
-  - job:
-    displayName: NuGet Validation
-    dependsOn: setupMaestroVars
-    condition: eq( ${{ parameters.enableNugetValidation }}, 'true')
-    pool:
-      vmImage: 'windows-2019'
-    variables:
-      - name: AzDOProjectName
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-      - name: AzDOPipelineId
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-      - name: AzDOBuildId
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-    steps:
-      - task: DownloadBuildArtifacts@0
-        displayName: Download Package Artifacts
-        inputs:
-          buildType: specific
-          buildVersionToDownload: specific
-          project: $(AzDOProjectName)
-          pipeline: $(AzDOPipelineId)
-          buildId: $(AzDOBuildId)
-          artifactName: PackageArtifacts
-
-      - task: PowerShell@2
-        displayName: Validate
-        inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/post-build/nuget-validation.ps1
-          arguments: -PackagesPath $(Build.ArtifactStagingDirectory)/PackageArtifacts/ 
-            -ToolDestinationPath $(Agent.BuildDirectory)/Extract/ 
-
-  - job:
-    displayName: Signing Validation
-    dependsOn: setupMaestroVars
-    condition: eq( ${{ parameters.enableSigningValidation }}, 'true')
+- ${{ if ne(parameters.inline, 'true') }}:
+  - stage: publish_using_darc
+    dependsOn: ${{ parameters.validateDependsOn }}
+    displayName: Publish using Darc
     variables:
       - template: common-variables.yml
-      - name: AzDOProjectName
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-      - name: AzDOPipelineId
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-      - name: AzDOBuildId
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-    pool:
-      vmImage: 'windows-2019'
-    steps:
-      - task: DownloadBuildArtifacts@0
-        displayName: Download Package Artifacts
-        inputs:
-          buildType: specific
-          buildVersionToDownload: specific
-          project: $(AzDOProjectName)
-          pipeline: $(AzDOPipelineId)
-          buildId: $(AzDOBuildId)
-          artifactName: PackageArtifacts
-
-      # This is necessary whenever we want to publish/restore to an AzDO private feed
-      # Since sdk-task.ps1 tries to restore packages we need to do this authentication here
-      # otherwise it'll complain about accessing a private feed.
-      - task: NuGetAuthenticate@0
-        displayName: 'Authenticate to AzDO Feeds'
-
-      - task: PowerShell@2
-        displayName: Enable cross-org publishing
-        inputs:
-          filePath: eng\common\enable-cross-org-publishing.ps1
-          arguments: -token $(dn-bot-dnceng-artifact-feeds-rw)
-
-      - task: PowerShell@2
-        displayName: Validate
-        inputs:
-          filePath: eng\common\sdk-task.ps1
-          arguments: -task SigningValidation -restore -msbuildEngine dotnet
-            /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts'
-            /p:SignCheckExclusionsFile='$(Build.SourcesDirectory)/eng/SignCheckExclusionsFile.txt'
-            ${{ parameters.signingValidationAdditionalParameters }}
-
-      - template: ../steps/publish-logs.yml
-        parameters:
-          StageLabel: 'Validation'
-          JobLabel: 'Signing'
-
-  - job:
-    displayName: SourceLink Validation
-    dependsOn: setupMaestroVars
-    condition: eq( ${{ parameters.enableSourceLinkValidation }}, 'true')
+    jobs:
+    - template: setup-maestro-vars.yml
+
+    - job:
+      displayName: Publish Using Darc
+      dependsOn: setupMaestroVars
+      variables:
+        - name: BARBuildId
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.BARBuildId'] ]
+      pool:
+        vmImage: 'windows-2019'
+      steps:
+        - task: PowerShell@2
+          displayName: Publish Using Darc
+          inputs:
+            filePath: $(Build.SourcesDirectory)/eng/common/post-build/publish-using-darc.ps1
+            arguments: -BuildId $(BARBuildId) 
+              -AzdoToken '$(publishing-dnceng-devdiv-code-r-build-re)'
+              -MaestroToken '$(MaestroApiAccessToken)'
+              -WaitPublishingFinish ${{ parameters.waitPublishingFinish }}
+              -EnableSourceLinkValidation ${{ parameters.enableSourceLinkValidation }}
+              -EnableSigningValidation ${{ parameters.enableSourceLinkValidation }}
+              -EnableNugetValidation ${{ parameters.enableSourceLinkValidation }}
+              -PublishInstallersAndChecksums ${{ parameters.publishInstallersAndChecksums }}
+              -ArtifactsPublishingAdditionalParameters '${{ parameters.artifactsPublishingAdditionalParameters }}'
+              -SigningValidationAdditionalParameters '${{ parameters.signingValidationAdditionalParameters }}'
+
+- ${{ if eq(parameters.inline, 'true') }}:
+  - stage: Validate
+    dependsOn: ${{ parameters.validateDependsOn }}
+    displayName: Validate Build Assets
     variables:
       - template: common-variables.yml
-      - name: AzDOProjectName
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-      - name: AzDOPipelineId
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-      - name: AzDOBuildId
-        value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-    pool:
-      vmImage: 'windows-2019'
-    steps:
-      - task: DownloadBuildArtifacts@0
-        displayName: Download Blob Artifacts
-        inputs:
-          buildType: specific
-          buildVersionToDownload: specific
-          project: $(AzDOProjectName)
-          pipeline: $(AzDOPipelineId)
-          buildId: $(AzDOBuildId)
-          artifactName: BlobArtifacts
-
-      - task: PowerShell@2
-        displayName: Validate
-        inputs:
-          filePath: $(Build.SourcesDirectory)/eng/common/post-build/sourcelink-validation.ps1
-          arguments: -InputPath $(Build.ArtifactStagingDirectory)/BlobArtifacts/ 
-            -ExtractPath $(Agent.BuildDirectory)/Extract/ 
-            -GHRepoName $(Build.Repository.Name) 
-            -GHCommit $(Build.SourceVersion)
-            -SourcelinkCliVersion $(SourceLinkCLIVersion)
-        continueOnError: true
-
-  - template: /eng/common/templates/job/execute-sdl.yml
-    parameters:
-      enable: ${{ parameters.SDLValidationParameters.enable }}
+    jobs:
+    - template: setup-maestro-vars.yml
+
+    - job:
+      displayName: Post-build Checks
+      dependsOn: setupMaestroVars
+      variables:
+        - name: TargetChannels
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.TargetChannels'] ]
+      pool:
+        vmImage: 'windows-2019'
+      steps:
+        - task: PowerShell@2
+          displayName: Maestro Channels Consistency
+          inputs:
+            filePath: $(Build.SourcesDirectory)/eng/common/post-build/check-channel-consistency.ps1
+            arguments: -PromoteToChannels "$(TargetChannels)"
+              -AvailableChannelIds ${{parameters.NetEngLatestChannelId}},${{parameters.NetEngValidationChannelId}},${{parameters.NetDev5ChannelId}},${{parameters.GeneralTestingChannelId}},${{parameters.NETCoreToolingDevChannelId}},${{parameters.NETCoreToolingReleaseChannelId}},${{parameters.NETInternalToolingChannelId}},${{parameters.NETCoreExperimentalChannelId}},${{parameters.NetEngServicesIntChannelId}},${{parameters.NetEngServicesProdChannelId}},${{parameters.Net5Preview5ChannelId}},${{parameters.Net5Preview6ChannelId}},${{parameters.Net5Preview7ChannelId}},${{parameters.NetCoreSDK313xxChannelId}},${{parameters.NetCoreSDK313xxInternalChannelId}},${{parameters.NetCoreSDK314xxChannelId}},${{parameters.NetCoreSDK314xxInternalChannelId}}
+
+    - job:
+      displayName: NuGet Validation
+      dependsOn: setupMaestroVars
+      condition: eq( ${{ parameters.enableNugetValidation }}, 'true')
+      pool:
+        vmImage: 'windows-2019'
+      variables:
+        - name: AzDOProjectName
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
+        - name: AzDOPipelineId
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
+        - name: AzDOBuildId
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
+      steps:
+        - task: DownloadBuildArtifacts@0
+          displayName: Download Package Artifacts
+          inputs:
+            buildType: specific
+            buildVersionToDownload: specific
+            project: $(AzDOProjectName)
+            pipeline: $(AzDOPipelineId)
+            buildId: $(AzDOBuildId)
+            artifactName: PackageArtifacts
+
+        - task: PowerShell@2
+          displayName: Validate
+          inputs:
+            filePath: $(Build.SourcesDirectory)/eng/common/post-build/nuget-validation.ps1
+            arguments: -PackagesPath $(Build.ArtifactStagingDirectory)/PackageArtifacts/ 
+              -ToolDestinationPath $(Agent.BuildDirectory)/Extract/ 
+
+    - job:
+      displayName: Signing Validation
       dependsOn: setupMaestroVars
-      additionalParameters: ${{ parameters.SDLValidationParameters.params }}
-      continueOnError: ${{ parameters.SDLValidationParameters.continueOnError }}
-      artifactNames: ${{ parameters.SDLValidationParameters.artifactNames }}
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'NetCore_Dev5_Publish'
-    channelName: '.NET 5 Dev'
-    akaMSChannelName: 'net5/dev'
-    channelId: ${{ parameters.NetDev5ChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'Net5_Preview2_Publish'
-    channelName: '.NET 5 Preview 2'
-    akaMSChannelName: 'net5/preview2'
-    channelId: ${{ parameters.Net5Preview2ChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'Net5_Preview3_Publish'
-    channelName: '.NET 5 Preview 3'
-    akaMSChannelName: 'net5/preview3'
-    channelId: ${{ parameters.Net5Preview3ChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'Net_Eng_Latest_Publish'
-    channelName: '.NET Eng - Latest'
-    akaMSChannelName: 'eng/daily'
-    channelId: ${{ parameters.NetEngLatestChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'Net_Eng_Validation_Publish'
-    channelName: '.NET Eng - Validation'
-    akaMSChannelName: 'eng/validation'
-    channelId: ${{ parameters.NetEngValidationChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'General_Testing_Publish'
-    channelName: 'General Testing'
-    akaMSChannelName: 'generaltesting'
-    channelId: ${{ parameters.GeneralTestingChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/general-testing/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/general-testing/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/general-testing-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'NETCore_Tooling_Dev_Publishing'
-    channelName: '.NET Core Tooling Dev'
-    channelId: ${{ parameters.NETCoreToolingDevChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'NETCore_Tooling_Release_Publishing'
-    channelName: '.NET Core Tooling Release'
-    channelId: ${{ parameters.NETCoreToolingReleaseChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-internal-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'NET_Internal_Tooling_Publishing'
-    channelName: '.NET Internal Tooling'
-    channelId: ${{ parameters.NETInternalToolingChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'NETCore_Experimental_Publishing'
-    channelName: '.NET Core Experimental'
-    channelId: ${{ parameters.NETCoreExperimentalChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'Net_Eng_Services_Int_Publish'
-    channelName: '.NET Eng Services - Int'
-    channelId: ${{ parameters.NetEngServicesIntChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'Net_Eng_Services_Prod_Publish'
-    channelName: '.NET Eng Services - Prod'
-    channelId: ${{ parameters.NetEngServicesProdChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-public-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'NETCore_SDK_313xx_Publishing'
-    channelName: '.NET Core SDK 3.1.3xx'
-    channelId: ${{ parameters.NetCoreSDK313xxChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1-transport/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1-symbols/nuget/v3/index.json'
-
-- template: \eng\common\templates\post-build\channels\generic-internal-channel.yml
-  parameters:
-    artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-    dependsOn: ${{ parameters.publishDependsOn }}
-    publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-    symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
-    stageName: 'NETCore_SDK_313xx_Internal_Publishing'
-    channelName: '.NET Core SDK 3.1.3xx Internal'
-    channelId: ${{ parameters.NetCoreSDK313xxInternalChannelId }}
-    transportFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-transport/nuget/v3/index.json'
-    shippingFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal/nuget/v3/index.json'
-    symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-symbols/nuget/v3/index.json' 
+      condition: eq( ${{ parameters.enableSigningValidation }}, 'true')
+      variables:
+        - template: common-variables.yml
+        - name: AzDOProjectName
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
+        - name: AzDOPipelineId
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
+        - name: AzDOBuildId
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
+      pool:
+        vmImage: 'windows-2019'
+      steps:
+        - ${{ if eq(parameters.useBuildManifest, true) }}:
+          - task: DownloadBuildArtifacts@0
+            displayName: Download build manifest
+            inputs:
+              buildType: specific
+              buildVersionToDownload: specific
+              project: $(AzDOProjectName)
+              pipeline: $(AzDOPipelineId)
+              buildId: $(AzDOBuildId)
+              artifactName: BuildManifests
+        - task: DownloadBuildArtifacts@0
+          displayName: Download Package Artifacts
+          inputs:
+            buildType: specific
+            buildVersionToDownload: specific
+            project: $(AzDOProjectName)
+            pipeline: $(AzDOPipelineId)
+            buildId: $(AzDOBuildId)
+            artifactName: PackageArtifacts
+
+        # This is necessary whenever we want to publish/restore to an AzDO private feed
+        # Since sdk-task.ps1 tries to restore packages we need to do this authentication here
+        # otherwise it'll complain about accessing a private feed.
+        - task: NuGetAuthenticate@0
+          displayName: 'Authenticate to AzDO Feeds'
+
+        - task: PowerShell@2
+          displayName: Enable cross-org publishing
+          inputs:
+            filePath: eng\common\enable-cross-org-publishing.ps1
+            arguments: -token $(dn-bot-dnceng-artifact-feeds-rw)
+
+        # Signing validation will optionally work with the buildmanifest file which is downloaded from
+        # Azure DevOps above.
+        - task: PowerShell@2
+          displayName: Validate
+          inputs:
+            filePath: eng\common\sdk-task.ps1
+            arguments: -task SigningValidation -restore -msbuildEngine vs
+              /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts'
+              /p:SignCheckExclusionsFile='$(Build.SourcesDirectory)/eng/SignCheckExclusionsFile.txt'
+              ${{ parameters.signingValidationAdditionalParameters }}
+
+        - template: ../steps/publish-logs.yml
+          parameters:
+            StageLabel: 'Validation'
+            JobLabel: 'Signing'
+
+    - job:
+      displayName: SourceLink Validation
+      dependsOn: setupMaestroVars
+      condition: eq( ${{ parameters.enableSourceLinkValidation }}, 'true')
+      variables:
+        - template: common-variables.yml
+        - name: AzDOProjectName
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
+        - name: AzDOPipelineId
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
+        - name: AzDOBuildId
+          value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
+      pool:
+        vmImage: 'windows-2019'
+      steps:
+        - task: DownloadBuildArtifacts@0
+          displayName: Download Blob Artifacts
+          inputs:
+            buildType: specific
+            buildVersionToDownload: specific
+            project: $(AzDOProjectName)
+            pipeline: $(AzDOPipelineId)
+            buildId: $(AzDOBuildId)
+            artifactName: BlobArtifacts
+
+        - task: PowerShell@2
+          displayName: Validate
+          inputs:
+            filePath: $(Build.SourcesDirectory)/eng/common/post-build/sourcelink-validation.ps1
+            arguments: -InputPath $(Build.ArtifactStagingDirectory)/BlobArtifacts/ 
+              -ExtractPath $(Agent.BuildDirectory)/Extract/ 
+              -GHRepoName $(Build.Repository.Name) 
+              -GHCommit $(Build.SourceVersion)
+              -SourcelinkCliVersion $(SourceLinkCLIVersion)
+          continueOnError: true
+
+    - template: /eng/common/templates/job/execute-sdl.yml
+      parameters:
+        enable: ${{ parameters.SDLValidationParameters.enable }}
+        dependsOn: setupMaestroVars
+        additionalParameters: ${{ parameters.SDLValidationParameters.params }}
+        continueOnError: ${{ parameters.SDLValidationParameters.continueOnError }}
+        artifactNames: ${{ parameters.SDLValidationParameters.artifactNames }}
+        downloadArtifacts: ${{ parameters.SDLValidationParameters.downloadArtifacts }}
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NetCore_Dev5_Publish'
+      channelName: '.NET 5 Dev'
+      akaMSChannelName: 'net5/dev'
+      channelId: ${{ parameters.NetDev5ChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net5_Preview5_Publish'
+      channelName: '.NET 5 Preview 5'
+      akaMSChannelName: 'net5/preview5'
+      channelId: ${{ parameters.Net5Preview5ChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net5_Preview6_Publish'
+      channelName: '.NET 5 Preview 6'
+      akaMSChannelName: 'net5/preview6'
+      channelId: ${{ parameters.Net5Preview6ChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net5_Preview7_Publish'
+      channelName: '.NET 5 Preview 7'
+      akaMSChannelName: 'net5/preview7'
+      channelId: ${{ parameters.Net5Preview7ChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net_Eng_Latest_Publish'
+      channelName: '.NET Eng - Latest'
+      akaMSChannelName: 'eng/daily'
+      channelId: ${{ parameters.NetEngLatestChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net_Eng_Validation_Publish'
+      channelName: '.NET Eng - Validation'
+      akaMSChannelName: 'eng/validation'
+      channelId: ${{ parameters.NetEngValidationChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'General_Testing_Publish'
+      channelName: 'General Testing'
+      akaMSChannelName: 'generaltesting'
+      channelId: ${{ parameters.GeneralTestingChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/general-testing/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/general-testing/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/general-testing-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NETCore_Tooling_Dev_Publishing'
+      channelName: '.NET Core Tooling Dev'
+      channelId: ${{ parameters.NETCoreToolingDevChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NETCore_Tooling_Release_Publishing'
+      channelName: '.NET Core Tooling Release'
+      channelId: ${{ parameters.NETCoreToolingReleaseChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-internal-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NET_Internal_Tooling_Publishing'
+      channelName: '.NET Internal Tooling'
+      channelId: ${{ parameters.NETInternalToolingChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/internal/_packaging/dotnet-tools-internal-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NETCore_Experimental_Publishing'
+      channelName: '.NET Core Experimental'
+      channelId: ${{ parameters.NETCoreExperimentalChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net_Eng_Services_Int_Publish'
+      channelName: '.NET Eng Services - Int'
+      channelId: ${{ parameters.NetEngServicesIntChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'Net_Eng_Services_Prod_Publish'
+      channelName: '.NET Eng Services - Prod'
+      channelId: ${{ parameters.NetEngServicesProdChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NETCore_SDK_314xx_Publishing'
+      channelName: '.NET Core SDK 3.1.4xx'
+      channelId: ${{ parameters.NetCoreSDK314xxChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-internal-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NETCore_SDK_314xx_Internal_Publishing'
+      channelName: '.NET Core SDK 3.1.4xx Internal'
+      channelId: ${{ parameters.NetCoreSDK314xxInternalChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-symbols/nuget/v3/index.json' 
+
+  - template: \eng\common\templates\post-build\channels\generic-public-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NETCore_SDK_313xx_Publishing'
+      channelName: '.NET Core SDK 3.1.3xx'
+      channelId: ${{ parameters.NetCoreSDK313xxChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet3.1-symbols/nuget/v3/index.json'
+
+  - template: \eng\common\templates\post-build\channels\generic-internal-channel.yml
+    parameters:
+      artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
+      dependsOn: ${{ parameters.publishDependsOn }}
+      publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
+      symbolPublishingAdditionalParameters: ${{ parameters.symbolPublishingAdditionalParameters }}
+      stageName: 'NETCore_SDK_313xx_Internal_Publishing'
+      channelName: '.NET Core SDK 3.1.3xx Internal'
+      channelId: ${{ parameters.NetCoreSDK313xxInternalChannelId }}
+      transportFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-transport/nuget/v3/index.json'
+      shippingFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal/nuget/v3/index.json'
+      symbolsFeed: 'https://pkgs.dev.azure.com/dnceng/_packaging/dotnet3.1-internal-symbols/nuget/v3/index.json' 
diff --git a/eng/common/templates/post-build/setup-maestro-vars.yml b/eng/common/templates/post-build/setup-maestro-vars.yml
index 05e611edb..b3d29d449 100644
--- a/eng/common/templates/post-build/setup-maestro-vars.yml
+++ b/eng/common/templates/post-build/setup-maestro-vars.yml
@@ -5,7 +5,9 @@ jobs:
     - template: common-variables.yml
     - name: BuildId
       value: $[ coalesce(variables.BARBuildId, 0) ]
-    - name: PromoteToChannelId
+    - name: PromoteToMaestroChannels
+      value: $[ coalesce(variables.PromoteToChannelIds, 0) ]
+    - name: PromoteToMaestroChannel 
       value: $[ coalesce(variables.PromoteToMaestroChannelId, 0) ]
   pool:
     vmImage: 'windows-2019'
@@ -14,7 +16,7 @@ jobs:
 
     - task: DownloadBuildArtifacts@0
       displayName: Download Release Configs
-      condition: eq(variables.PromoteToChannelId, 0)
+      condition: and(eq(variables.PromoteToMaestroChannels, 0), eq(variables.PromoteToMaestroChannel, 0))
       inputs:
         buildType: current
         artifactName: ReleaseConfigs
@@ -26,20 +28,16 @@ jobs:
         targetType: inline
         script: |
           try {
-            if ($Env:PromoteToChannelId -eq 0) {
+            if ($Env:PromoteToMaestroChannels -eq 0 -and $Env:PromoteToMaestroChannel -eq 0) {
               $Content = Get-Content $(Build.StagingDirectory)/ReleaseConfigs/ReleaseConfigs.txt
 
               $BarId = $Content | Select -Index 0
-
-              $Channels = ""
-              $Content | Select -Index 1 | ForEach-Object { $Channels += "$_ ," }
-              
+              $Channels = $Content | Select -Index 1             
               $IsStableBuild = $Content | Select -Index 2
 
               $AzureDevOpsProject = $Env:System_TeamProject
               $AzureDevOpsBuildDefinitionId = $Env:System_DefinitionId
               $AzureDevOpsBuildId = $Env:Build_BuildId
-              $PromoteToMaestroChannelId = 0
             }
             else {
               $buildApiEndpoint = "${Env:MaestroApiEndPoint}/api/builds/${Env:BARBuildId}?api-version=${Env:MaestroApiVersion}"
@@ -51,25 +49,23 @@ jobs:
               $buildInfo = try { Invoke-WebRequest -Method Get -Uri $buildApiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
              
               $BarId = $Env:BARBuildId
-              $Channels = 'None'
-
-              #TODO: Fix this once this issue is done: https://github.com/dotnet/arcade/issues/3834
-              $IsStableBuild = 'False'
+              $Channels = $Env:PromoteToMaestroChannels -split ","
+              $Channels = $Channels -join "]["
+              $Channels = "[$Channels][$Env:PromoteToMaestroChannel]"
 
+              $IsStableBuild = $buildInfo.stable
               $AzureDevOpsProject = $buildInfo.azureDevOpsProject
               $AzureDevOpsBuildDefinitionId = $buildInfo.azureDevOpsBuildDefinitionId
               $AzureDevOpsBuildId = $buildInfo.azureDevOpsBuildId
-              $PromoteToMaestroChannelId = $Env:PromoteToMaestroChannelId
             }
 
             Write-Host "##vso[task.setvariable variable=BARBuildId;isOutput=true]$BarId"
-            Write-Host "##vso[task.setvariable variable=InitialChannels;isOutput=true]$Channels"
+            Write-Host "##vso[task.setvariable variable=TargetChannels;isOutput=true]$Channels"
             Write-Host "##vso[task.setvariable variable=IsStableBuild;isOutput=true]$IsStableBuild"
 
             Write-Host "##vso[task.setvariable variable=AzDOProjectName;isOutput=true]$AzureDevOpsProject"
             Write-Host "##vso[task.setvariable variable=AzDOPipelineId;isOutput=true]$AzureDevOpsBuildDefinitionId"
             Write-Host "##vso[task.setvariable variable=AzDOBuildId;isOutput=true]$AzureDevOpsBuildId"
-            Write-Host "##vso[task.setvariable variable=PromoteToMaestroChannelId;isOutput=true]$PromoteToMaestroChannelId"
           }
           catch {
             Write-Host $_
diff --git a/eng/common/templates/steps/send-to-helix.yml b/eng/common/templates/steps/send-to-helix.yml
index 30becf01e..5eceb4872 100644
--- a/eng/common/templates/steps/send-to-helix.yml
+++ b/eng/common/templates/steps/send-to-helix.yml
@@ -10,7 +10,7 @@ parameters:
   HelixPostCommands: ''                  # optional -- commands to run after Helix work item execution
   WorkItemDirectory: ''                  # optional -- a payload directory to zip up and send to Helix; requires WorkItemCommand; incompatible with XUnitProjects
   WorkItemCommand: ''                    # optional -- a command to execute on the payload; requires WorkItemDirectory; incompatible with XUnitProjects
-  WorkItemTimeout: ''                    # optional -- a timeout in seconds for the work item command; requires WorkItemDirectory; incompatible with XUnitProjects
+  WorkItemTimeout: ''                    # optional -- a timeout in TimeSpan.Parse-ready value (e.g. 00:02:00) for the work item command; requires WorkItemDirectory; incompatible with XUnitProjects
   CorrelationPayloadDirectory: ''        # optional -- a directory to zip up and send to Helix as a correlation payload
   XUnitProjects: ''                      # optional -- semicolon delimited list of XUnitProjects to parse and send to Helix; requires XUnitRuntimeTargetFramework, XUnitPublishTargetFramework, XUnitRunnerVersion, and IncludeDotNetCli=true
   XUnitWorkItemTimeout: ''               # optional -- the workitem timeout in seconds for all workitems created from the xUnit projects specified by XUnitProjects
@@ -18,8 +18,8 @@ parameters:
   XUnitRuntimeTargetFramework: ''        # optional -- framework to use for the xUnit console runner
   XUnitRunnerVersion: ''                 # optional -- version of the xUnit nuget package you wish to use on Helix; required for XUnitProjects
   IncludeDotNetCli: false                # optional -- true will download a version of the .NET CLI onto the Helix machine as a correlation payload; requires DotNetCliPackageType and DotNetCliVersion
-  DotNetCliPackageType: ''               # optional -- either 'sdk' or 'runtime'; determines whether the sdk or runtime will be sent to Helix; see https://raw.githubusercontent.com/dotnet/core/master/release-notes/releases.json
-  DotNetCliVersion: ''                   # optional -- version of the CLI to send to Helix; based on this: https://raw.githubusercontent.com/dotnet/core/master/release-notes/releases.json
+  DotNetCliPackageType: ''               # optional -- either 'sdk' or 'runtime'; determines whether the sdk or runtime will be sent to Helix; see https://raw.githubusercontent.com/dotnet/core/master/release-notes/releases-index.json
+  DotNetCliVersion: ''                   # optional -- version of the CLI to send to Helix; based on this: https://raw.githubusercontent.com/dotnet/core/master/release-notes/releases-index.json
   EnableXUnitReporter: false             # optional -- true enables XUnit result reporting to Mission Control
   WaitForWorkItemCompletion: true        # optional -- true will make the task wait until work items have been completed and fail the build if work items fail. False is "fire and forget."
   IsExternal: false                      # [DEPRECATED] -- doesn't do anything, jobs are external if HelixAccessToken is empty and Creator is set
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index 60c1cd897..d68684e2a 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -7,9 +7,11 @@
 # Build configuration. Common values include 'Debug' and 'Release', but the repository may use other names.
 [string]$configuration = if (Test-Path variable:configuration) { $configuration } else { 'Debug' }
 
+# Set to true to opt out of outputting binary log while running in CI
+[bool]$excludeCIBinarylog = if (Test-Path variable:excludeCIBinarylog) { $excludeCIBinarylog } else { $false }
+
 # Set to true to output binary log from msbuild. Note that emitting binary log slows down the build.
-# Binary log must be enabled on CI.
-[bool]$binaryLog = if (Test-Path variable:binaryLog) { $binaryLog } else { $ci }
+[bool]$binaryLog = if (Test-Path variable:binaryLog) { $binaryLog } else { $ci -and !$excludeCIBinarylog }
 
 # Set to true to use the pipelines logger which will enable Azure logging output.
 # https://github.com/Microsoft/azure-pipelines-tasks/blob/master/docs/authoring/commands.md
@@ -55,10 +57,8 @@ set-strictmode -version 2.0
 $ErrorActionPreference = 'Stop'
 [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
 
-function Create-Directory([string[]] $path) {
-  if (!(Test-Path $path)) {
-    New-Item -path $path -force -itemType 'Directory' | Out-Null
-  }
+function Create-Directory ([string[]] $path) {
+    New-Item -Path $path -Force -ItemType 'Directory' | Out-Null
 }
 
 function Unzip([string]$zipfile, [string]$outpath) {
@@ -124,7 +124,9 @@ function InitializeDotNetCli([bool]$install, [bool]$createSdkLocationFile) {
 
   # Find the first path on %PATH% that contains the dotnet.exe
   if ($useInstalledDotNetCli -and (-not $globalJsonHasRuntimes) -and ($env:DOTNET_INSTALL_DIR -eq $null)) {
-    $dotnetCmd = Get-Command 'dotnet.exe' -ErrorAction SilentlyContinue
+    $dotnetExecutable = GetExecutableFileName 'dotnet'
+    $dotnetCmd = Get-Command $dotnetExecutable -ErrorAction SilentlyContinue
+
     if ($dotnetCmd -ne $null) {
       $env:DOTNET_INSTALL_DIR = Split-Path $dotnetCmd.Path -Parent
     }
@@ -283,12 +285,19 @@ function InstallDotNet([string] $dotnetRoot,
 # Throws on failure.
 #
 function InitializeVisualStudioMSBuild([bool]$install, [object]$vsRequirements = $null) {
+  if (-not (IsWindowsPlatform)) {
+    throw "Cannot initialize Visual Studio on non-Windows"
+  }
+
   if (Test-Path variable:global:_MSBuildExe) {
     return $global:_MSBuildExe
   }
 
+  $vsMinVersionReqdStr = '16.5'
+  $vsMinVersionReqd = [Version]::new($vsMinVersionReqdStr)
+
   if (!$vsRequirements) { $vsRequirements = $GlobalJson.tools.vs }
-  $vsMinVersionStr = if ($vsRequirements.version) { $vsRequirements.version } else { '15.9' }
+  $vsMinVersionStr = if ($vsRequirements.version) { $vsRequirements.version } else { $vsMinVersionReqdStr }
   $vsMinVersion = [Version]::new($vsMinVersionStr)
 
   # Try msbuild command available in the environment.
@@ -321,8 +330,18 @@ function InitializeVisualStudioMSBuild([bool]$install, [object]$vsRequirements =
       $xcopyMSBuildVersion = $GlobalJson.tools.'xcopy-msbuild'
       $vsMajorVersion = $xcopyMSBuildVersion.Split('.')[0]
     } else {
-      $vsMajorVersion = $vsMinVersion.Major
-      $xcopyMSBuildVersion = "$vsMajorVersion.$($vsMinVersion.Minor).0-alpha"
+      #if vs version provided in global.json is incompatible then use the default version for xcopy msbuild download
+      if($vsMinVersion -lt $vsMinVersionReqd){
+        Write-Host "Using xcopy-msbuild version of $vsMinVersionReqdStr.0-alpha since VS version $vsMinVersionStr provided in global.json is not compatible"
+        $vsMajorVersion = $vsMinVersionReqd.Major
+        $vsMinorVersion = $vsMinVersionReqd.Minor
+      }
+      else{
+        $vsMajorVersion = $vsMinVersion.Major
+        $vsMinorVersion = $vsMinVersion.Minor
+      }
+
+      $xcopyMSBuildVersion = "$vsMajorVersion.$vsMinorVersion.0-alpha"
     }
 
     $vsInstallDir = $null
@@ -387,6 +406,10 @@ function InitializeXCopyMSBuild([string]$packageVersion, [bool]$install) {
 # or $null if no instance meeting the requirements is found on the machine.
 #
 function LocateVisualStudio([object]$vsRequirements = $null){
+  if (-not (IsWindowsPlatform)) {
+    throw "Cannot run vswhere on non-Windows platforms."
+  }
+
   if (Get-Member -InputObject $GlobalJson.tools -Name 'vswhere') {
     $vswhereVersion = $GlobalJson.tools.vswhere
   } else {
@@ -452,7 +475,8 @@ function InitializeBuildTool() {
       Write-PipelineTelemetryError -Category 'InitializeToolset' -Message "/global.json must specify 'tools.dotnet'."
       ExitWithExitCode 1
     }
-    $buildTool = @{ Path = Join-Path $dotnetRoot 'dotnet.exe'; Command = 'msbuild'; Tool = 'dotnet'; Framework = 'netcoreapp2.1' }
+    $dotnetPath = Join-Path $dotnetRoot (GetExecutableFileName 'dotnet')
+    $buildTool = @{ Path = $dotnetPath; Command = 'msbuild'; Tool = 'dotnet'; Framework = 'netcoreapp2.1' }
   } elseif ($msbuildEngine -eq "vs") {
     try {
       $msbuildPath = InitializeVisualStudioMSBuild -install:$restore
@@ -488,10 +512,11 @@ function GetNuGetPackageCachePath() {
   if ($env:NUGET_PACKAGES -eq $null) {
     # Use local cache on CI to ensure deterministic build,
     # use global cache in dev builds to avoid cost of downloading packages.
+    # For directory normalization, see also: https://github.com/NuGet/Home/issues/7968
     if ($useGlobalNuGetCache) {
-      $env:NUGET_PACKAGES = Join-Path $env:UserProfile '.nuget\packages'
+      $env:NUGET_PACKAGES = Join-Path $env:UserProfile '.nuget\packages\'
     } else {
-      $env:NUGET_PACKAGES = Join-Path $RepoRoot '.packages'
+      $env:NUGET_PACKAGES = Join-Path $RepoRoot '.packages\'
     }
   }
 
@@ -546,7 +571,7 @@ function InitializeToolset() {
 
   MSBuild-Core $proj $bl /t:__WriteToolsetLocation /clp:ErrorsOnly`;NoSummary /p:__ToolsetLocationOutputFile=$toolsetLocationFile
 
-  $path = Get-Content $toolsetLocationFile -TotalCount 1
+  $path = Get-Content $toolsetLocationFile -Encoding UTF8 -TotalCount 1
   if (!(Test-Path $path)) {
     throw "Invalid toolset path: $path"
   }
@@ -604,8 +629,8 @@ function MSBuild() {
 #
 function MSBuild-Core() {
   if ($ci) {
-    if (!$binaryLog) {
-      Write-PipelineTelemetryError -Category 'Build' -Message 'Binary log must be enabled in CI build.'
+    if (!$binaryLog -and !$excludeCIBinarylog) {
+      Write-PipelineTelemetryError -Category 'Build' -Message 'Binary log must be enabled in CI build, or explicitly opted-out from with the -excludeCIBinarylog switch.'
       ExitWithExitCode 1
     }
 
@@ -632,6 +657,8 @@ function MSBuild-Core() {
     }
   }
 
+  $env:ARCADE_BUILD_TOOL_COMMAND = "$($buildTool.Path) $cmdArgs"
+
   $exitCode = Exec-Process $buildTool.Path $cmdArgs
 
   if ($exitCode -ne 0) {
@@ -663,6 +690,19 @@ function GetMSBuildBinaryLogCommandLineArgument($arguments) {
   return $null
 }
 
+function GetExecutableFileName($baseName) {
+  if (IsWindowsPlatform) {
+    return "$baseName.exe"
+  }
+  else {
+    return $baseName
+  }
+}
+
+function IsWindowsPlatform() {
+  return [environment]::OSVersion.Platform -eq [PlatformID]::Win32NT
+}
+
 . $PSScriptRoot\pipeline-logging-functions.ps1
 
 $RepoRoot = Resolve-Path (Join-Path $PSScriptRoot '..\..')
diff --git a/eng/common/tools.sh b/eng/common/tools.sh
index caae1dbdb..e94fce22e 100644
--- a/eng/common/tools.sh
+++ b/eng/common/tools.sh
@@ -18,9 +18,17 @@ fi
 # Build configuration. Common values include 'Debug' and 'Release', but the repository may use other names.
 configuration=${configuration:-'Debug'}
 
+# Set to true to opt out of outputting binary log while running in CI
+exclude_ci_binary_log=${exclude_ci_binary_log:-false}
+
+if [[ "$ci" == true && "$exclude_ci_binary_log" == false ]]; then
+  binary_log_default=true
+else
+  binary_log_default=false
+fi
+
 # Set to true to output binary log from msbuild. Note that emitting binary log slows down the build.
-# Binary log must be enabled on CI.
-binary_log=${binary_log:-$ci}
+binary_log=${binary_log:-$binary_log_default}
 
 # Turns on machine preparation/clean up code that changes the machine state (e.g. kills build processes).
 prepare_machine=${prepare_machine:-false}
@@ -201,7 +209,14 @@ function InstallDotNet {
 
       local runtimeSourceFeedKey=''
       if [[ -n "${7:-}" ]]; then
-        decodedFeedKey=`echo $7 | base64 --decode`
+        # The 'base64' binary on alpine uses '-d' and doesn't support '--decode'
+        # '-d'. To work around this, do a simple detection and switch the parameter
+        # accordingly.
+        decodeArg="--decode"
+        if base64 --help 2>&1 | grep -q "BusyBox"; then
+            decodeArg="-d"
+        fi
+        decodedFeedKey=`echo $7 | base64 $decodeArg`
         runtimeSourceFeedKey="--feed-credential $decodedFeedKey"
       fi
 
@@ -397,8 +412,8 @@ function MSBuild {
 
 function MSBuild-Core {
   if [[ "$ci" == true ]]; then
-    if [[ "$binary_log" != true ]]; then
-      Write-PipelineTelemetryError -category 'Build'  "Binary log must be enabled in CI build."
+    if [[ "$binary_log" != true && "$exclude_ci_binary_log" != true ]]; then
+      Write-PipelineTelemetryError -category 'Build'  "Binary log must be enabled in CI build, or explicitly opted-out from with the -noBinaryLog switch."
       ExitWithExitCode 1
     fi
 
@@ -415,11 +430,17 @@ function MSBuild-Core {
     warnaserror_switch="/warnaserror"
   fi
 
-  "$_InitializeBuildTool" "$_InitializeBuildToolCommand" /m /nologo /clp:Summary /v:$verbosity /nr:$node_reuse $warnaserror_switch /p:TreatWarningsAsErrors=$warn_as_error /p:ContinuousIntegrationBuild=$ci "$@" || {
-    local exit_code=$?
-    Write-PipelineTelemetryError -category 'Build'  "Build failed (exit code '$exit_code')."
-    ExitWithExitCode $exit_code
+  function RunBuildTool {
+    export ARCADE_BUILD_TOOL_COMMAND="$_InitializeBuildTool $@"
+
+    "$_InitializeBuildTool" "$@" || {
+      local exit_code=$?
+      Write-PipelineTaskError "Build failed (exit code '$exit_code')."
+      ExitWithExitCode $exit_code
+    }
   }
+
+  RunBuildTool "$_InitializeBuildToolCommand" /m /nologo /clp:Summary /v:$verbosity /nr:$node_reuse $warnaserror_switch /p:TreatWarningsAsErrors=$warn_as_error /p:ContinuousIntegrationBuild=$ci "$@"
 }
 
 ResolvePath "${BASH_SOURCE[0]}"
diff --git a/global.json b/global.json
index 97d605a7e..50ea51adc 100644
--- a/global.json
+++ b/global.json
@@ -1,9 +1,9 @@
 {
   "tools": {
-    "dotnet": "5.0.100-preview.5.20228.8"
+    "dotnet": "5.0.100-preview.6.20266.3"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "5.0.0-beta.20201.2",
-    "Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk": "5.0.0-beta.20201.2"
+    "Microsoft.DotNet.Arcade.Sdk": "5.0.0-beta.20280.1",
+    "Microsoft.DotNet.Build.Tasks.SharedFramework.Sdk": "5.0.0-beta.20280.1"
   }
 }
diff --git a/pkg/Directory.Build.props b/pkg/Directory.Build.props
index 3efa4ad06..28b9eb7b6 100644
--- a/pkg/Directory.Build.props
+++ b/pkg/Directory.Build.props
@@ -11,6 +11,7 @@
     <!-- This link should be updated for each release milestone, currently this points to 1.0.0 -->
     <ReleaseNotes>https://go.microsoft.com/fwlink/?LinkID=799417</ReleaseNotes>
     <ProjectUrl>https://dot.net</ProjectUrl>
+    <RepositoryUrl>https://github.com/dotnet/windowsdesktop</RepositoryUrl>
 
     <!-- this repo doesn't currently use the index so don't force it to be in sync -->
     <SkipIndexCheck>true</SkipIndexCheck>