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| Criterion |  DevOps Blameless Postmortem |  DevOps ChatOps |  Agile Mad Sad Glad |  Operations Learning Review |
|---|---|---|---|---|
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. | 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 team's or workshop's mood needs to become readable, it structures emotional signals with little setup. It makes strain, relief, and sources of energy tangible. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-90 min | Ongoing | 30-60 min | 1-3 h |
Participantsdifferent | 3-12 | 2-20 | 3-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Chat Transcript, Action Log, Automations | Emotion Board, Themes, Action Items | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | CollaborationEngineeringIncident | RetrospectiveTeamReflection | LearningRetrospectiveIncidentOperations |