Lean Six Sigma is a methodology that combines two powerful process improvement techniques: Lean and Six Sigma. It is a team-focused managerial approach that seeks to improve performance by eliminating resource waste and defects. Lean focuses on reducing waste and promoting work standardization and flow, while Six Sigma focuses on reducing process variation and enhancing process control. By combining the strengths of these two methodologies, Lean Six Sigma provides a comprehensive approach to process improvement that can be applied to any industry or sector.

Lean Six Sigma is also known as LSS.