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| Criterion |  DevOps Blameless Postmortem |  Operations After-Action Review |  Operations ALPEN Method |  DevOps Game Day |
|---|---|---|---|---|
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. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 30-90 min | 20-45 min | 10-20 min daily | Halber Tag |
Participantsdifferent | 3-12 | 3-12 | 1 | 5-20 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Lessons learned, Action items, Event summary | Daily Plan, Time Estimates, Review Notes | Simulation Notes, Gaps List, Updated Runbooks |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LearningOperationsImprovement | PlanningTime managementProductivityOperations | ResilienceOperationsIncident |