Packaged CCE is a certified solution. Its a pre-designed pre-packaged deployment of Unified CCE with CVP, CUIC, Finesse and UCM on a single server for up to 1000 agents. Read more here:
http://docwiki.cisco.com/wiki/Packaged_CCE

Starting 9.0 release, CCE is deployment model aware, and when you deploy as per Packaged CCE spec and select the deployment model as PCCE during install, you get access to the APIs specifically available for Packaged CCE deployment. A subset of these APIs are available for UCCE standard SRND deployments. See UCCE developers guide for the set of APIs available on UCCE deployment models.

The APIs and new Web UI run on the AW, no separate component.