In April 2021, we announced the Microsoft Build of OpenJDK. We were starting with a preview of our Java 11 builds for Windows, Linux, and macOS. Today, if you’re planning a Java upgrade on Azure, you have several generations of that work to build on: 11, 17, 21, and now 25.
Java 8 has been part of that work too, with help from the fine folks at the Eclipse Foundation’s Eclipse Adoptium project. Microsoft has supported Java 8 on Azure using their Eclipse Temurin builds of OpenJDK 8, rather than producing a Microsoft Build of OpenJDK 8. That collaboration goes back to the launch: our first Java 11 builds also used Adoptium’s build scripts and quality assurance suite.
Supporting those releases has meant years of updates. Now it’s time to plan the next move. The Microsoft Build of OpenJDK support roadmap lists September 2027 as the earliest end-of-support date for Java 11 and 17. That’s a distribution-wide milestone: if you use those Microsoft builds on a VM, in a container, on Kubernetes, on Azure platform services, or evem outside Azure, it belongs in your upgrade planning. These dates are initial targets, and Microsoft may extend them. However, consider taking action now.
Azure services also have their own deadlines. Azure App Service and Azure Functions support for Java 8, 11, and 17 ends on September 1, 2027. Existing applications will continue to run, but the affected Java versions will no longer receive security updates, improvements, or related customer support.
If that’s your application, the practical question is how to get to Java 21 or 25 while keeping it working. GitHub Copilot modernization gives you a tool: the Modernize CLI, which can assess your code, help plan the upgrade, and actually perform and apply changes for you to review.