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| Criterion |  Operations After-Action Review |  Agile Sprint Retrospective |  DevOps Game Day |  DevOps Blameless Postmortem |
|---|---|---|---|---|
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. | When a sprint is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes 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 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. |
Complexitydifferent | Low | Low | High | Medium |
Timedifferent | 20-45 min | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | Halber Tag | 30-90 min |
Participantsdifferent | 3-12 | Scrum Team | 5-20 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Improvement actions, Team agreements | Simulation Notes, Gaps List, Updated Runbooks | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | LearningOperationsImprovement | RetrospectiveImprovementLearning | ResilienceOperationsIncident | Site Reliability EngineeringIncidentLearningReliability |