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| Criterion |  DevOps Blameless Postmortem |  Operations Barrier Analysis |  Operations Kepner-Tregoe |  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 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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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 | Medium | High | Medium |
Timedifferent | 30-90 min | 2-4 h | 2-8 h | As needed |
Participantsdifferent | 3-12 | 2-6 | 2-8 | 4-15 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Problem Analysis, Decision Analysis, Risk Plan | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Root causeSafetyIncident | Problem solvingRoot causeDecisionOperations | IncidentOperationsReliability |