Since the early 00s, the emphasis within interaction design on consumer products and discretionary use has grown considerably. In this book, Kolko addresses that design space through the lens of product management, and advocates a design-led process to focus on customer needs and feelings from ideation all through to shipping. The introduction, called "From design thinking to design doing", is one of the best and most accessible motivations for interaction design that I have seen in a long time, and the book moves on to introducing steps and techniques for design-led product development combined with interviews with professionals. Overall, the book has practical appeal and credibility; even though it is nominally aimed at product managers, I can definitely see a use for it in teaching interaction design students what to aim for in their professional role after graduation.