CICS Transaction Server Version 5.6 introduced enhanced support for Java to deliver a cloud-native experience for Java developers. For example, the new CICS Java API (JCICSX) allows easier unit testing using mocking and stubbing approaches, and can be run remotely on the developer’s local workstation. A set of CICS artifacts on Maven Central enable developers to resolve Java dependencies using popular dependency management tools such as Apache Maven and Gradle. Plug-ins for Maven (cics-bundle-maven) and Gradle (cics-bundle-gradle) are also provided to simplify automated building of CICS bundles, using familiar IDEs like Eclipse, IntelliJ IDEA, and Visual Studio Code. In addition, Node.js z/OS support is enhanced for version 12, providing faster startup, better default heap limits, updates to the V8 JavaScript engine, etc. Support for Jakarta EE 8 is also included.