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| Criterion |  Decision Making Pre-Mortem |  DevOps Blameless Postmortem |  Engineering Failure Scenario Analysis |  DevOps Incident Command |
|---|---|---|---|---|
Purposedifferent | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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 | Low | Medium | Medium | Medium |
Timedifferent | 20–45 min | 30-90 min | 1-3 h | As needed |
Participantsdifferent | Small cross-functional group | 3-12 | 3-8 | 4-15 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Postmortem Doc, Action Items, Timeline | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | RiskDecisionFailurePlanning | Site Reliability EngineeringIncidentLearningReliability | FailureResilienceRisk | IncidentOperationsReliability |