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| Criterion |  DevOps Blameless Postmortem |  Team Design Team Topologies Interaction Modes |  DevOps ChatOps |  Agile 4Ls Retrospective |
|---|---|---|---|---|
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 several teams collaborate repeatedly, it describes the right interaction mode for each interface between them. It clarifies responsibility, interaction, and load between teams. The result is captured as an interaction heat map and pairwise agreements. | 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 | 30-90 min | Half day | Ongoing | 45–75 min |
Participantsdifferent | 3-12 | Team-Leads plus Architecture | 2-20 | Team members involved |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Interaction Heat Map, Agreements per Pair | Chat Transcript, Action Log, Automations | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | TeamAlignmentCollaborationOrganization | CollaborationEngineeringIncident | RetrospectiveLearningReflectionTeam |