### Use case Original discussion: https://github.com/aws-powertools/powertools-lambda-python/discussions/2986 Similar to the Tracer utility (https://docs.powertools.aws.dev/lambda/python/latest/core/tracer/#environment-variables), our customers want to disable custom metrics in environments like dev and others. More information here: https://discord.com/channels/1006478942305263677/1006478942787604491/1143575948994826260 ### Solution/User Experience Create an environment variable to explicitly disable custom metrics. ### Alternative solutions _No response_ ### Acknowledgment - [X] This feature request meets [Powertools for AWS Lambda (Python) Tenets](https://docs.powertools.aws.dev/lambda/python/latest/#tenets) - [X] Should this be considered in other Powertools for AWS Lambda languages? i.e. [Java](https://github.com/aws-powertools/powertools-lambda-java/), [TypeScript](https://github.com/aws-powertools/powertools-lambda-typescript/), and [.NET](https://github.com/aws-powertools/powertools-lambda-dotnet/)