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| Criterion |  Agile Sprint Retrospective |  DevOps Blameless Postmortem |  Operations ALPEN Method |  Operations After-Action Review |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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 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. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 30-90 min | 10-20 min daily | 20-45 min |
Participantsdifferent | Scrum Team | 3-12 | 1 | 3-12 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Improvement actions, Team agreements | Postmortem Doc, Action Items, Timeline | Daily Plan, Time Estimates, Review Notes | Lessons learned, Action items, Event summary |
Tagsno overlap | RetrospectiveImprovementLearning | Site Reliability EngineeringIncidentLearningReliability | PlanningTime managementProductivityOperations | LearningOperationsImprovement |