Where does Galaxy place in the CE architecture

Hello,

I need to clear my concept about CAF GP, Business Process Management and Galaxy. As far I know CAF GP is used to design business process and UI (iViews) which can be seen in runtime and design time too. And Galaxy is a new version of BPM which is also embadded into CE instead of CAF GP. This is the thing I have to clear.

Please refer me any document or link where I can clear my concept of all of these technologies.

Regards,

Khan