A key concept distinguishing six sigma from lean manufacturing and just-in-time (JIT) concepts is:

Six Sigma distinguishes itself from Lean Manufacturing and Just-In-Time (JIT) concepts by its primary focus on reducing process variability and defects. Six Sigma aims to keep processes within strict limits to ensure consistency and high quality, using statistical methods and DMAIC (Define, Measure, Analyze, Improve, Control) methodology. Lean Manufacturing focuses on eliminating waste and improving flow, while JIT emphasizes inventory reduction and timely production. Six Sigma’s rigorous data-driven approach to quality and process improvement sets it apart.