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| Criterion |  Operations A3 Problem Solving |  DevOps Game Day |  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. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. | 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 | Halber Tag | 20-45 min | 15-30 min |
Participantsdifferent | 2-5 | 5-20 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Simulation Notes, Gaps List, Updated Runbooks | Lessons learned, Action items, Event summary | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | ResilienceOperationsIncident | LearningOperationsImprovement | Root causeIncidentLeanProblem solving |