I have the pleasure recently, after working with BizTalk since 2001, of actually implementing a solution using the business rules engine aka BRE as hosted by a BizTalk Orchestration. While the "insight" is fresh, I though I'd jot down my observations. This may be of interest to you if you are evaluating this for use within your solution/organization. BRE uses a different paradigm than typical coding. Now if you are considering BizTalk, then you are probably aware of this already. But even so, although ......