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| Criterion |  Operations After-Action Review |  DevOps Blameless Postmortem |  Decision Making Delphi Method |  DevOps Incident Command |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | 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 | Low | Medium | High | Medium |
Timedifferent | 20-45 min | 30-90 min | 1-4 Wochen | As needed |
Participantsdifferent | 3-12 | 3-12 | 6-30 Experten | 4-15 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Postmortem Doc, Action Items, Timeline | Expert Forecast, Consensus Range, Assumption Notes | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | LearningOperationsImprovement | Site Reliability EngineeringIncidentLearningReliability | ForecastingExpertsDecisionStrategy | IncidentOperationsReliability |