The Six Sigma concept has enjoyed triumphant success throughout the business world for two decades, contributing significantly to net income improvement for companies large and small, public and private, well-known and unknown. For a number of years this successful concept has been supplemented by the tools of Lean Management, a set of strategies for improving product quality and delivery performance and reducing cost. As practiced by the authors of this book the Six Sigma+Lean approach combines the tried-and-tested tools of both worlds, which are linked together systematically in the proven DMAIC process model.