Ash Maurya does a splendid job in integrate Lean principles of continuous flow, waste elimination, and quality from the customers perspective (among other principles and methods) into the process of Product Development and Project Management. This book is often used as a more systematic and process oriented approach than other popular “Lean” books like “Lean Startup”. I used the process and method in product development and project management of my own and found it VERY useful to break down stages, prototype, and iterate, and work towards a novel and useful product from the customers perspective. I’d recommend this book for Entrepreneurs just starting out but also Project Managers, Change Agents, and Continuous Improvement folks as well.