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| Criterion |  DevOps Blameless Postmortem |  Systems Thinking CATWOE Analysis |  Operations A3 Problem Solving |  Operations After-Action Review |
|---|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | CATWOE structures a problem from six viewpoints and prevents too narrow a view of the situation. Different experiences of the system become comparably discussable this way. | 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-90 min | 45-90 min | 45-90 min | 20-45 min |
Participantsdifferent | 3-12 | 3-8 | 2-5 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | CATWOE Canvas, Root Definition, Stakeholder Perspectives, Constraints | A3 Report, Action Plan, Root Cause Analysis | Lessons learned, Action items, Event summary |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Systems thinkingFramingStakeholders | LeanProblem solvingCoachingOperations | LearningOperationsImprovement |