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| Criterion |  DevOps Blameless Postmortem |  Operations Kepner-Tregoe |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | 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 disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Medium | High | High |
Timedifferent | 30-90 min | 2-8 h | 1-6 Wochen |
Participantsdifferent | 3-12 | 2-8 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Problem Analysis, Decision Analysis, Risk Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Problem solvingRoot causeDecisionOperations | QualityProblem solvingRoot cause |
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