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| Criterion |  Operations Accountability Ladder |  DevOps Blameless Postmortem |  Agile Starfish Retrospective |  Agile Sailboat Retrospective |
|---|---|---|---|---|
Purposedifferent | With defensive reactions to problems, the method shifts the view from justification to ownership. It makes visible which reaction stage a person or team is currently stuck on. | 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 improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. | 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 | Low | Medium | Low | Low |
Timedifferent | 20-45 min | 30-90 min | 45-90 min | 45-90 min |
Participantsdifferent | 1-8 | 3-12 | 4-12 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Ownership Reflection, Action Commitment, Coaching Notes | Postmortem Doc, Action Items, Timeline | Starfish Board, Practice Changes, Experiments | Sailboat Board, Risks, Improvement Actions |
Tagsno overlap | ResponsibilityLeadershipTeam | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveImprovementExperimentsTeam | RetrospectiveTeamImprovement |