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| Criterion |  Operations Learning Review |  DevOps Blameless Postmortem |  DevOps ChatOps |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | 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. | For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 1-3 h | 30-90 min | Ongoing | 45–75 min |
Participantsdifferent | 3-10 | 3-12 | 2-20 | Team members involved |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Learning Review Notes, System Factors, Improvement Actions | Postmortem Doc, Action Items, Timeline | Chat Transcript, Action Log, Automations | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | LearningRetrospectiveIncidentOperations | Site Reliability EngineeringIncidentLearningReliability | CollaborationEngineeringIncident | RetrospectiveLearningReflectionTeam |