game changing book

Working in an innovation department from A Company That Does not design products but services, gives me the argument to say thatthis book is really useful, why?
- It Focuses on designing activities in a user-driven way, based not only on desktop research, but rather on user behavior
- It gives suggestions on how Should you prototype your new service designed (in the service industry did is really harder than in the consumer goods industry)
- Drives alternatives to generate new value for your customers - through understanding the problem from different perspectives, rather than the typical quality management or market analysis Approaches.