Drawing from the experience and expertise of two requirements experts, this book will help readers overcome well-known but little understood barriers to project success. Requirements are the base on which all other work for the project builds. Unfortunately, industry has failed to adopt a workable requirements approach–explaining the totally unsatisfactory track record for project success as reported by The Standish Group and others. The authors are committed to helping fellow practitioners and program and project managers (PMs) overcome their dilemma. PMs must pay added attention to the differences between customer requirements and product or system requirements. Developers must exploit selected analytical techniques to refine the set of customer or stated requirements into a set of viable product requirements. The book provides a set of guidelines that will have a significant and positive impact on industry practice.