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| Criterion |  Operations Runbook |  Operations Causal Factor Analysis |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | For recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 20-60 min | 2-6 h | 30-90 min |
Participantsdifferent | 1-4 | 3-10 | 3-12 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Runbook, Checklist, Escalation Path | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | OperationsReliabilityDocumentation | CausalityIncidentRoot causeTimeline | Site Reliability EngineeringIncidentLearningReliability |
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