Sprint is a novel way to develop ideas, starting from brainstorming to prototyping, testing, and evaluating. The author, who has gone through trials and errors to develop this method, claimed that it has been adopted in many start-ups and large companies in the US, due to its effectiveness to prove an idea in just 5 days. Through this book he will explain how sprint works, who is important and needs to be involved, step by step, with examples from the companies he has accompanied for doing sprint.