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| Criterion |  Operations After-Action Review |  Operations Learning Review |  Operations ALPEN Method |  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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | 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. | 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 | Medium | Low | Medium |
Timedifferent | 20-45 min | 1-3 h | 10-20 min daily | 30-90 min |
Participantsdifferent | 3-12 | 3-10 | 1 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Learning Review Notes, System Factors, Improvement Actions | Daily Plan, Time Estimates, Review Notes | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | LearningOperationsImprovement | LearningRetrospectiveIncidentOperations | PlanningTime managementProductivityOperations | Site Reliability EngineeringIncidentLearningReliability |