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| Criterion |  Product Strategy Lean Canvas |  Operations Learning Review |  Operations 5 Whys |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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 | Medium | Medium | Low | Low |
Timedifferent | 45-90 min | 1-3 h | 15-30 min | 45–75 min |
Participantsdifferent | 1-6 | 3-10 | 2-6 | Team members involved |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | Learning Review Notes, System Factors, Improvement Actions | Root cause notes, Countermeasures | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | StartupLeanAssumptionsBusiness model | LearningRetrospectiveIncidentOperations | Root causeIncidentLeanProblem solving | RetrospectiveLearningReflectionTeam |