Six Sigma Certification Guide: What You Need to Know

Six Sigma certification is a structured credential in process improvement, built around the DMAIC cycle (define, measure, analyse, improve, control) and awarded in belt levels. The five recognised levels run from White and Yellow through Green and Black to Master Black Belt, with each level taking on a bigger role in leading projects (SixSigma.us). Which body you certify with matters more than most people expect: ASQ, IASSC and the Council for Six Sigma Certification set different rules on experience, project evidence and renewal.

Lena Vostrikova · 8 min read