Six Sigma is a set of methodologies and tools used to improve business processes by reducing defects and errors, minimizing variation, and increasing quality and efficiency. The goal of Six Sigma is to achieve a level of quality that is nearly perfect, with only 3.4 defects per million opportunities.

Six Sigma provides a systematic, data-driven framework for improving quality and empowering employees in these and many other industries. That framework rests on Six Sigma's five core principles: define, measure, analyze, improve, and control.

Six Sigma (6σ) is a set of techniques and tools for improving the quality of processes. This data-driven and disciplined methodology can be used in any process, from manufacturing to transactional and from product to service.

Key Takeaways. Lean Six Sigma seeks to improve employee and company performance by eliminating the waste of resources and process/product defects. It combines the process improvement methods of Six Sigma and lean enterprise. Lean Six Sigma helps to establish a clear path to achieving improvement objectives.