Kanban and Scrum is a similar small and useful book as Henrik's earlier popular book Scrum and XP from the Trenches (Enterprise Software Development). Kanban and Scrum briefly compares Scrum and Kanban to explain the differences and give hints in which situation one is perhaps better than the other. Just like Henrik's earlier book, this is a very thin and easy to read book.
"Kanban and Scrum" is about 100 pages and consists of 2 parts, each written by one of the two authors. The first part is the "Kanban and Scrum" part, written by Henrik, where he shortly clarifies Scrum and Kanban and explains the differences between them. He gives hints to in which situation Kanban and which situation Scrum might be better... and also hints about ways of combining them into Scrumban (a term Henrik doesn't use, but was popularized by one of the first descriptions of Kanban by Corey Ladas Scrumban - Essays on Kanban Systems for Lean Software Development).
The second part of this book is an experience report written by Mattias Skarin about applying Kanban for an operations team in a games company. He briefly explains how they got started and how gradually they evolved Kanban and the kind of decisions they had to make.
This book is very thin and reads fast (of the 100 pages, there are a lot of empty pages). Most of it is available for free from Henrik's page, so if you don't want to buy the book, you can just download it :) The writing is easy to read, it reads more like a blog post than a book.
Amazon stars-wise, I've been thinking about 3 or 4 stars. 3 stars because the book is thin, not very thorough and it does what it is supposed to do well, but not much more. It doesn't give a thorough introduction of Kanban (for that, probably check David Andersons work: Kanban) it doesn't give a thorough introduction of Scrum either. It just briefly explains the difference. Four stars because Henriks writing is very popular (a little too popular for me) but it attracts a wide audience. Also, his writing is very clear, he has a good ability to explain seemingly complex concepts in a simple way. Yet, this book is not a ground-shaking new book. In the end, I decided to favor Henriks explanation skills and go for 4 stars. If you know about Scrum and heard about Kanban and... wonder... then this is the book for you! If you want to have a thorough explanation of Kanban or Scrum, skip this book and go for the ones mentioned in this review.