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| Criterion |  Operations A3 Problem Solving |  Operations Learning Review |  Agile 4Ls Retrospective |  Operations After-Action Review |
|---|---|---|---|---|
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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | 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. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 45-90 min | 1-3 h | 45–75 min | 20-45 min |
Participantsdifferent | 2-5 | 3-10 | Team members involved | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Learning Review Notes, System Factors, Improvement Actions | 4Ls Board, Learning Themes, Improvement Actions | Lessons learned, Action items, Event summary |
Tagsno overlap | LeanProblem solvingCoachingOperations | LearningRetrospectiveIncidentOperations | RetrospectiveLearningReflectionTeam | LearningOperationsImprovement |