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| Criterion |  DevOps Blameless Postmortem |  Operations ALPEN Method |  Operations Kepner-Tregoe |
|---|---|---|---|
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. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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. |
Complexitydifferent | Medium | Low | High |
Timedifferent | 30-90 min | 10-20 min daily | 2-8 h |
Participantsdifferent | 3-12 | 1 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Daily Plan, Time Estimates, Review Notes | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | PlanningTime managementProductivityOperations | Problem solvingRoot causeDecisionOperations |
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