e-vita has been involved in several Weblogic 12c-projects. We will in this presentation give you some of the learnings from those projects. All of the projects were based on existing Application Server 10g-solutions. You win some - you lose some. Weblogic Server 12c incluces much more functionality that OC4J, but the 10g Application Server also included many products in the stack: Webcache, LDAP(OID), SSO etc. This is all functionality that you need to handle in the new architecture also.