This is not a book to read, but to use as a reference. As the authors previous book, this is extremely simplistic and sometimes child-like in its approach (some may like, but I am not one of them).

To be true, they cover a lot of ground, from how to hold workshops, to utilize different models/methods/etc, but if you have had any experience with ITIL, Lean, Project or Product management, marketing or at least attended some recent strategy courses, you will not find anything new in this book. It is all old re-hash (like 5 Whys, Blue Oceans, Define Success, etc.).

That said, it is an OK book for its intended audience, which I interpret are non-management trained "Design Thinkers" that can't be bothered to learn the "boring" stuff in any other way.

If you need a reference book on some current management utilities, it is OK.