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| Criterion |  Agile Affinity Estimation |  DevOps Blameless Postmortem |  Operations 5 Whys |
|---|---|---|---|
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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 30-90 min | 30-90 min | 15-30 min |
Participantsdifferent | 3-12 | 3-12 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Postmortem Doc, Action Items, Timeline | Root cause notes, Countermeasures |
Tagsno overlap | EstimationBacklogRelative sizing | Site Reliability EngineeringIncidentLearningReliability | Root causeIncidentLeanProblem solving |
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