Transitioning notes for development topics

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

• Migrate APIs and specifications

  v9.0 supports Java Platform, Enterprise Edition (Java EE) 7, which introduces some behavior changes from some Java EE 6 technologies. All applications that run on v9.0 must use the Java EE 7 implementation of a technology except for JAX-RS and JPA. For JAX-RS and JPA, the product configuration defaults to Java EE 7, but we can update our configuration to use the Java EE 6 implementation.