|I forget the first time I became aware of Roger Sessions. I think a collegue of mine in the .com days might have had him as a lecturer. Certainly I got on his ObjectWatch newsletter some time back.
I picked up Software Fortresses - Modeling Enterprise Architectures from the library and it is an interesting read. While I don't see too much evidence that the methodology expoused by the book has been adopted by the mainstream, it is a book that is worth reading for some of the ideas none-the-less.
Principle among these is the idea that system boundries should be seen in the context of organisational dynamics. In other words, if your organisation goes for a centralised database structure and that is unlikely to change in the near term, then it makes sense to model and build your systems that way. This is a great insight as far as I am concerned. It is too easy to be seduced by the idea that IT folk are hyper-rational geeks, and forget the reality that we are all just as human as the rest. Anyone who has tried to implement a system for real can attest to the fact that often it is the human factor that is the primary determinant of success.
The last chapter ("Postlude") is worth the price of the book itself. Here it lists a series of Top-10s such as
The book was published in 2003, but I think we see some sign that the challenges expresed by Mr sessions may well be being addressed - such as the wide-spread adoption of SOAP/Web Services. Mr Sessions words do however spell a warning to those who try to overload such technologies with too much intre-fortress baggage.