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| Criterion |  DevOps Blameless Postmortem |  Operations Failure Mode and Effects 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 a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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 | High | Medium |
Timedifferent | 30-90 min | 2-6 h | As needed |
Participantsdifferent | 3-12 | 3-10 | 4-15 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | FMEA Table, Risk Priority, Mitigation Actions | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RiskQualityOperationsRoot cause | IncidentOperationsReliability |
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