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| Criterion |  Operations After-Action Review |  Operations Process Mapping |  Operations Learning Review |  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. | With a confusing workflow that has many handoffs, the method makes the actual process visible. It shows where work is passed on, delayed, or duplicated, so improvement targets the right spots. | 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. | 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 | Medium | Medium |
Timedifferent | 20-45 min | 1-3 h | 1-3 h | 30-90 min |
Participantsdifferent | 3-12 | 3-10 | 3-10 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Process Map, Handoff List, Improvement Backlog | Learning Review Notes, System Factors, Improvement Actions | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | LearningOperationsImprovement | ProcessOperationsImprovement | LearningRetrospectiveIncidentOperations | Site Reliability EngineeringIncidentLearningReliability |