This document provides an overview of Lean Thinking and Six Sigma. It discusses how Lean and Six Sigma can be applied together to cut costs, improve quality, and speed up delivery through continuous process improvement. Lean focuses on eliminating waste and improving flow, while Six Sigma helps reduce process variation and defects. When combined, Lean and Six Sigma are more effective as they bring complementary approaches to process improvement. The document recommends using Lean first before Six Sigma in most cases. It also outlines some key principles of Lean, such as empowering people and taking a systems approach.