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| Criterion |  Facilitation Team Charter |  DevOps Blameless Postmortem |  DevOps ChatOps |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | When a team is starting fresh or working past each other, Team Charter clarifies the shared working basis. It visibly sets out how collaboration, decision paths, and mutual conduct should work day to day. | 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 | 2-4 h | 30-90 min | Ongoing | 45–75 min |
Participantsdifferent | 3-12 | 3-12 | 2-20 | Team members involved |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Team Charter, Working Norms, Role Notes | Postmortem Doc, Action Items, Timeline | Chat Transcript, Action Log, Automations | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | TeamAlignmentCollaboration | Site Reliability EngineeringIncidentLearningReliability | CollaborationEngineeringIncident | RetrospectiveLearningReflectionTeam |