Transitioning notes for development topics

When you upgrade the application server to a newer version, be aware of the following settings that you might want to change.

  • Moving applications to the cloud

    Suggests ways to modernize your applications and existing WebSphere® Application Server topologies.

  • Migrating APIs and specifications

    Version 9.0 supports Java Platform, Enterprise Edition (Java EE) 7, which introduces some behavior changes from some Java EE 6 technologies. The Java EE 7 Liberty runtime also supports Java EE 8. For more information, see Java EE 8 in Liberty. Version 9.0 uses the Java EE 7 implementation for technologies, except for JAX-RS and JPA. For JAX-RS and JPA, the product configuration defaults to Java EE 7, but you can update your configuration to use the Java EE 6 implementation.