Lean Vs Six Sigma
The two popular terms and philosophy much talked about during process improvement and excellence are Lean and Six Sigma.
Well, what is the difference?
Lean: This philosophy is a very commonsenical approach. Lean can be implemented when a problem exists, root cause is known and solution can be implemented immediately. Lean embraces methodology like KAIZEN, SAMURAI and Zen Master for having the problem solved. Individuals get certified as Lean Kaizen, Lean Samurai and Lean Zen Master.
Six Sigma: This philosophy is a data driven approach. Six Sigma projects gets implemented when a business experiences a problem, problem has multiple potential causes and hence data needs to be analyzed for every cause impacting the problem. Hence the solution cannot be implemented. Six Sigma projects primarily focuses on metrics for process improvement. Six Sigma embraces DMAIC (Define, Measure, Analyze, Improve, Control) and DMADV (Define, Measure, Analyze, Design, Validate) or DFSS (Design for Six Sigma) as methodologies. Individuals following this methodology get certified as Green Belt, Black Belt and Master Black Belt.