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| Criterion | ![]() Product Strategy Lean Canvas | ![]() Operations A3 Problem Solving | ![]() Operations After-Action Review | ![]() Operations 5 Whys |
|---|---|---|---|---|
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. | 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 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. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 45-90 min | 45-90 min | 20-45 min | 15-30 min |
Participantsdifferent | 1-6 | 2-5 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | A3 Report, Action Plan, Root Cause Analysis | Lessons learned, Action items, Event summary | Root cause notes, Countermeasures |
Tagsno overlap | StartupLeanAssumptionsBusiness model | LeanProblem solvingCoachingOperations | LearningOperationsImprovement | Root causeIncidentLeanProblem solving |



