The title, Dynamic Enterprise Architecture, is very good idea, but I think I wasted time and money when I bought and read the book. In chapter 4, the book described the Dyanmic Architecture model that made disappointed.
1) The concept of Development without Architecture is at least impossible, and I do not think it is right concept in principle. I am architect, and have never heard any enterprise application was developed without architecture. The architecture is basically the solution of the enterprise computer system. I cannot image that system is developed without solution, because it will not work without architecture.
2) Except the non-architecture development issue, the other part of the model is not more reasonable than other architecture models, such as Microsoft's Milestone-Driven Process.
3) From chapter 5, the book described the process of using the Dynamic Architecture. First, the process is not useful. I do not think any enterprise will do the same thing that so complicated and so complex, even they decided to use the Dynamic Architecture. Second, Some analysis and evaluation lack good grounds, such as the Finacial Analysis. The cost is very important factor in the evaluation of the architecture. It depends on the hardware and software architectures. The book just gave a number of the cost, and the benefits. I cannot believe the numbers.
Anyway, I think this is a good idea, and important topic of discussion, so I gave it two stars. BTW, the price, $55, is too expensive. I think it might be worth of $15 if the contents are not so disappointed.