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| Criterion |  Agile 4Ls Retrospective |  Operations Accountability Ladder |  DevOps Blameless Postmortem |  DevOps Incident Command |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 45–75 min | 20-45 min | 30-90 min | As needed |
Participantsdifferent | Team members involved | 1-8 | 3-12 | 4-15 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 4Ls Board, Learning Themes, Improvement Actions | Ownership Reflection, Action Commitment, Coaching Notes | Postmortem Doc, Action Items, Timeline | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | RetrospectiveLearningReflectionTeam | ResponsibilityLeadershipTeam | Site Reliability EngineeringIncidentLearningReliability | IncidentOperationsReliability |