With the increased popularity of SOA, taking a central stage in the enterprise architecture, it becomes more and more obvious that it has to start leveraging advances achieved by other related disciplines. This point of view is confirmed by an interesting discussion about relationships between SOA and Domain Driven Design.

While SOA is:

an architectural style promoting the concept of business-aligned enterprise service as the fundamental unit of designing, building and composing enterprise business solutions

DDD is:

a way of thinking and a set of priorities, aimed at accelerating software projects that have to deal with complicated domains

The seeming commonalities between the two started this discussion (Trond-Eirik), by asking the following questions: