Lean Six Sigma

Concept

A process improvement approach that combines lean, which removes waste and speeds up flow, with Six Sigma, which reduces variation and defects using data and the DMAIC steps.

Title graphic: Lean Six Sigma (Concept)

Description

Lean Six Sigma combines two improvement approaches. Lean focuses on removing waste and speeding up flow. Six Sigma focuses on reducing variation and defects, using data and statistics. Together they address both the time a process takes and the quality it delivers.

Projects often follow the DMAIC steps of Six Sigma: define, measure, analyse, improve and control. Lean tools such as value stream mapping help to find where to look, and Six Sigma tools help to prove the cause and check the result. Many companies train staff in belts, such as green belt and black belt, to lead projects. The two approaches overlap, so the practical question is which tool fits the problem at hand.

Type	Concept
Also known as	LSS
Wikipedia	en.wikipedia.org/wiki/Lean_Six_Sigma

Relationship map of Lean Six Sigma: linked topics

Related to

iFAKT GmbH · Organization
Lean management · Concept
Continuous improvement · Concept
Operational excellence · Concept
Operational excellence manager · 職種 / 役割

Glossary

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Sources

Wikipedia: en.wikipedia.org/wiki/Lean_Six_Sigma

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-11