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| Criterion |  Engineering Failure Scenario Analysis |  DevOps Blameless Postmortem |  Operations Barrier Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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 risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-3 h | 30-90 min | 2-4 h |
Participantsdifferent | 3-8 | 3-12 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Postmortem Doc, Action Items, Timeline | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | FailureResilienceRisk | Site Reliability EngineeringIncidentLearningReliability | Root causeSafetyIncident |
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