This handbook provides a comprehensive and detailed framework for the implementation of "Continuous Improvement" and Lean Six Sigma in a professional project management environment. For this purpose the book brings together Lean Six Sigma and the PMBOK standard for project management. It provides an integrated approach, which can be used for both transactional and manufacturing businesses to better define ways to reduce costs, enhance processes ,and achieve faster implementation and new product or service development. The reader is guided carefully and reliably through the detailed procedures introduced in this book using a comprehensive, conceptual and practical well-balanced approach.