CAF (Composite Application Framework) and ESA

Hi,

As far as I understand, XApps is presented as a piece of Netweaver (the column on the left side of the NetWeaver stack), an XApps is also a kind of business process based on several applications (or services ?).

XApps runtime and composition platform is the CAF and not NetWeaver ?

So I am confused and I do not understand if

- ESA and XApps is the same concept

- ESA and XApps are not based on the same technology

- XApps will be part of the Enterprise Services Repository and CAF will be rewrtitten to be based on XI so that the vision and the strategy is coherent

If someone ca nclarify, I will greatly appreciate.

Cheers.Christophe