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| Criterion |  Agile Affinity Estimation |  DevOps Blameless Postmortem |  DevOps Incident Command |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | 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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 30-90 min | 30-90 min | As needed | 1-3 h |
Participantsdifferent | 3-12 | 3-12 | 4-15 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Postmortem Doc, Action Items, Timeline | Incident Log, Action Tracker, Stakeholder Updates | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | EstimationBacklogRelative sizing | Site Reliability EngineeringIncidentLearningReliability | IncidentOperationsReliability | LearningRetrospectiveIncidentOperations |