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| Criterion |  DevOps Blameless Postmortem |  Agile 4Ls Retrospective |  Agile Sailboat 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 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. | When a team wants to read momentum, brakes, and risks together, it offers an easily understandable picture of the situation. It makes drive, obstacles, and headwind visible in the same picture. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 30-90 min | 45–75 min | 45-90 min |
Participantsdifferent | 3-12 | Team members involved | 4-12 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | 4Ls Board, Learning Themes, Improvement Actions | Sailboat Board, Risks, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveLearningReflectionTeam | RetrospectiveTeamImprovement |
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