Application Express runs as a thin veneer over the Oracle Database and is a fully supported feature of the Oracle Database. 

Centroid assists our customers with reviewing the available tools within the extensible platform and ensures that the security, authentication, database interactions, input validation and session state management aligns and works seamlessly and rapidly as a part of the Oracle Database.

Additionally, and more importantly, your application automatically scales with your Oracle Database. Centroid will assist in seamlessly moving applications to and from the Oracle Database Cloud Service, private and public clouds on premise.

APEX is Fully Supported. Enterprise Ready.