This document provides an excerpt from the book "The Lean Six Sigma Guide to Doing More with Less" which discusses how Lean Six Sigma methodologies can help companies reduce costs. The summary includes testimonials from company leaders about the benefits they achieved from Lean Six Sigma including reduced costs and improved processes. It also previews the book's table of contents which details how Lean Six Sigma can be applied at both the process and enterprise level to drive cost reductions through waste elimination, process improvements, and transformation efforts.