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| Criterion |  Operations Accountability Ladder |  DevOps Blameless Postmortem |  Agile 4Ls 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 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 | Low |
Timedifferent | 20-45 min | 30-90 min | 45–75 min |
Participantsdifferent | 1-8 | 3-12 | Team members involved |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Ownership Reflection, Action Commitment, Coaching Notes | Postmortem Doc, Action Items, Timeline | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | ResponsibilityLeadershipTeam | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveLearningReflectionTeam |
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