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| Criterion |  DevOps Blameless Postmortem |  Agile Sprint Retrospective |  Agile Mad Sad Glad |  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 is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes 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. | 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 | Low |
Timedifferent | 30-90 min | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 30-60 min | 45-90 min |
Participantsdifferent | 3-12 | Scrum Team | 3-10 | 4-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Improvement actions, Team agreements | Emotion Board, Themes, Action Items | Sailboat Board, Risks, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveImprovementLearning | RetrospectiveTeamReflection | RetrospectiveTeamImprovement |