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| Criterion | ![]() Operations Gemba Walk | ![]() Operations A3 Problem Solving | ![]() Agile Start Stop Continue | ![]() Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | When a team wants to deliberately adjust its working behavior, it makes habits visible and assessable. It focuses on concrete changes instead of diffuse mood. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 30-120 min | 45-90 min | 30-60 min | 45–75 min |
Participantsdifferent | 2-6 | 2-5 | 3-12 | Team members involved |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | A3 Report, Action Plan, Root Cause Analysis | Start Stop Continue Board, Improvement Actions | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | LeanObservationProcessOperations | LeanProblem solvingCoachingOperations | RetrospectiveImprovementTeamReflection | RetrospectiveLearningReflectionTeam |



