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| Criterion |  Operations A3 Problem Solving |  Operations Gemba Walk |  Agile 4Ls Retrospective |  Agile Start Stop Continue |
|---|---|---|---|---|
Purposedifferent | 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 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. | 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. | 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 45-90 min | 30-120 min | 45–75 min | 30-60 min |
Participantsdifferent | 2-5 | 2-6 | Team members involved | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Observation Notes, Improvement Ideas | 4Ls Board, Learning Themes, Improvement Actions | Start Stop Continue Board, Improvement Actions |
Tagsno overlap | LeanProblem solvingCoachingOperations | LeanObservationProcessOperations | RetrospectiveLearningReflectionTeam | RetrospectiveImprovementTeamReflection |