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| Criterion |  Operations Barrier Analysis |  DevOps Blameless Postmortem |  DevOps Incident Timeline Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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 an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 2-4 h | 30-90 min | 60-180 min |
Participantsdifferent | 2-6 | 3-12 | 3-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Postmortem Doc, Action Items, Timeline | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions |
Tags1 shared | Root causeSafetyIncident | Site Reliability EngineeringIncidentLearningReliability | IncidentTimelineSite Reliability Engineering |
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