When you encounter Six Sigma, you might hear it used in conjunction with other terms and methodologies. Perhaps one such term you've heard is Lean. Lean is a very complex process. Here, we won't dig into all the complexities of Lean, but instead provide a high-level overview of what Lean is to help you become familiar with some of the processes and terms you'll hear in reference to a Lean organization. We'll also discuss how it interfaces with Six Sigma methodologies.