Jack van Hoof had a great article today - How to implement a loosely coupled process flow (EDA). A great illustration of how to use a decision service to loosely couple. I have blogged about SOA/EDA and EDM before and there was a great session at EBRC on this topic. I think being event-driven and decision-centric is important in the world in which we find ourselves and that decisions can be the glue between services, events, processes and legacy applications. If you are not already subscribed to Jack's blog, you should be. He's worth reading.
Apologies for cross-posting.