Joe, You are right that the process layer depends on the services layer for execution (and the services layer depends on the process layer for coordination). I guess that David's point is that the ebXML effort was extremely focused on evaluating how the service and process layers work together in an extensible manner -> what capabilities are necessary in the service layer and process layer.

The electronic business services oriented architecture (ebSOA) is not a "services architecture" (read services layer architecture), but instead the electronic business architecture focused on the use of services as a means to extensible and decoupled standard business practices (read business process execution).

In that regard, I need to agree with David that BPM has been part of the electronic business architecture (including service oriented implementations) for a long time.

I completely recognize and agree with focusing both inside and outside the ebXML framework, and agree that getting visibility to the importance of BPM in the stack is essential to success.

Looking forward to working with you,

John