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| Criterion |  Agile Start Stop Continue |  DevOps Blameless Postmortem |  DevOps Incident Command |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | When a team wants to deliberately adjust its working behavior, it makes habits visible and assessable. It focuses on concrete changes instead of diffuse mood. | 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. | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | 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 | Low | Medium | Medium | Low |
Timedifferent | 30-60 min | 30-90 min | As needed | 45–75 min |
Participantsdifferent | 3-12 | 3-12 | 4-15 | Team members involved |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Start Stop Continue Board, Improvement Actions | Postmortem Doc, Action Items, Timeline | Incident Log, Action Tracker, Stakeholder Updates | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | RetrospectiveImprovementTeamReflection | Site Reliability EngineeringIncidentLearningReliability | IncidentOperationsReliability | RetrospectiveLearningReflectionTeam |