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| Criterion |  DevOps Blameless Postmortem |  Operations Runbook |  Operations Causal Factor Analysis |  DevOps Incident Command |
|---|---|---|---|---|
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 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. | 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. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 30-90 min | 20-60 min | 2-6 h | As needed |
Participantsdifferent | 3-12 | 1-4 | 3-10 | 4-15 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Runbook, Checklist, Escalation Path | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | OperationsReliabilityDocumentation | CausalityIncidentRoot causeTimeline | IncidentOperationsReliability |