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| Criterion |  Operations A3 Problem Solving |  Growth A/B Testing |  Operations After-Action Review |  Operations 5 Whys |
|---|---|---|---|---|
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 two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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 | High | Low | Low |
Timedifferent | 45-90 min | 1-4 Wochen | 20-45 min | 15-30 min |
Participantsdifferent | 2-5 | 1-6 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Experiment results, Decision log, Learning summary | Lessons learned, Action items, Event summary | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | ExperimentsGrowthAnalyticsValidation | LearningOperationsImprovement | Root causeIncidentLeanProblem solving |