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| Criterion |  DevOps Blameless Postmortem |  Operations After-Action Review |  Decision Making Assumption Surfacing |  DevOps Incident Command |
|---|---|---|---|---|
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. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 30-90 min | 20-45 min | 45-90 min | As needed |
Participantsdifferent | 3-12 | 3-12 | 2-8 | 4-15 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Lessons learned, Action items, Event summary | Assumption List, Critical Assumptions, Learning Plan | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LearningOperationsImprovement | AssumptionsRiskDecisionDiscovery | IncidentOperationsReliability |