-As a **Rolling** strategy can run multiple versions of the app at the same time, requests from the browser must be routed to a matching app version (that is, an app that has the same microflow or nanoflow parameters). The Operator uses Kubernetes service labels to perform an atomic switch, and instantly switch all clients to the updated version. This is done automatically once the number of updated replicas reaches a certain threshold. By default the threshold is 50% of all replicas. The value is specified in the [switchoverThreshold](#prefer-rolling-in-standalone) parameter.
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