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| Criterion |  DevOps Blameless Postmortem |  Agile 4Ls Retrospective |  DevOps ChatOps |
|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 45–75 min | Ongoing |
Participantsdifferent | 3-12 | Team members involved | 2-20 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | 4Ls Board, Learning Themes, Improvement Actions | Chat Transcript, Action Log, Automations |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveLearningReflectionTeam | CollaborationEngineeringIncident |
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