This book tries to provide a guidance on how to make your architecture understandable through documentation.
The book is very complete, all the information you would expect to find is in it. But I feel that the authors took it too far. The amount of information can be overwhelming especially because it is spread over large pieces of text. The book can be hard to read because the language is very technical and the writing style isn't very entertaining. Luckily, the authors included a readers guide (advising you on which chapters to read depending on your background).
The content of the book is good. It contains lots of quotes, sideline hints/tips and perspectives which are very useful. Also the usage of diagrams and examples make it much more understandable. The summaries, questions and references at the end of each chapter are a great addition.
"Documenting Software Architectures" is very complete which makes it ideal as a reference book. It is not for the faint-hearted/beginners but is an addition to each architects bookshelf.
Disclosure: I received a copy of this book from the publisher in exchange for writing this review on behalf of CodeRanch.