This is one of the most enjoyable business boks I have ever read. I am a devout student of strategy & innovation and hence have read quite extensively on those subjects. But when it comes to the question of business models, even Adrian Slywotzky, who may be considered as the real father of the concept of business models, is not as clear in handling the concept as Mark Johnson. Johnson's definition of the concept, and especially his breaking it down to four elements (he calls them boxes) is brilliant. Sure, Slywotzky's business model definition also has four elements but here the boxes make the handling of the concept terribly simple and managable. In short, the definition of this rather hard-to-grab concept is excellent.
Johnson's next move in the book is to show how a new business model can be designed on the basis of his four-box formula. He starts with the first step of defining a new customer value proposition (CVP). After this, he moves backwards to work out the 'processes' that need to be created or improved so as to fulfill this new CVP as well as singling out the `resource requirements' in the organization. From there onwards he shows how to work out the `profit model' for the newly generated business model. Hence, once all those four boxes have been filled `democratically' (with participation from managers at all levels of the company) and carefully, the company is now ready to implement the new strategy.
At this point comes the other strength of the book whereby it does not leave the subject at the point of strategy formulation. Instead, it moves to explain even the knittty gritty details of implementation/execution. Here also Johnson is very good and drives on deep experience.
The book is full of enlightening case examples. Some are known stuff (like iPod, iPhone, Hitli etc.) but you find a lot of new examples which are really good.
When you reach the end of the book -which I assure you it will be very very swift (I finished it in only three sittings)- you feel relieved because you feel like you finally have a workable model in your hands which you can start toying with tomorrow morning.
This is a very very good book on strategy. There may be other good business model books around as one reviewer suggested. But this book should certainly be included in that list of excellent books on business model generation and implementation. I personally thank the author for giving me such a great pleasure in reading this wonderful work.