Not the sonic-software Dave Chappell, but the one of Chappell & Associates on Building Modern Software: Services, Workflow, Integration.

Exuberant speaker. Ex-funk pianist.

Walked through service-orientation as the current default enterprise architecture; and how the new Microsoft technologies underly this architecture: WCF, WF, and BizTalk.

This was a good overview of these issues (but, I wish I could get to the Digipede VPN from here . . . ).