The OneAgent release version 1.215 introduces several updates and changes, affecting Dynatrace SaaS customers, particularly with the switch in the domain for internal communication from *.live.ruxit.com to *.live.dynatrace.com starting June 30, 2021. This release provides support for OpenTelemetry in Java and Go, enhancements for monitoring on z/OS, and resolves numerous issues across different components, including .NET, Java, PHP, and Infrastructure Monitoring. It also outlines future deprecations of support for certain operating systems and technologies like OpenTelemetry for Go and Node.js. Additionally, the release includes cumulative updates that address problems such as service crashes, incorrect metrics, and improved module stability, alongside specific fixes for mobile session replay and JavaScript performance improvements.