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| Criterion |  Operations Barrier Analysis |  DevOps Blameless Postmortem |  Operations Failure Mode and Effects Analysis |  DevOps Incident Command |
|---|---|---|---|---|
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 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 | Medium | High | Medium |
Timedifferent | 2-4 h | 30-90 min | 2-6 h | As needed |
Participantsdifferent | 2-6 | 3-12 | 3-10 | 4-15 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Postmortem Doc, Action Items, Timeline | FMEA Table, Risk Priority, Mitigation Actions | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | Root causeSafetyIncident | Site Reliability EngineeringIncidentLearningReliability | RiskQualityOperationsRoot cause | IncidentOperationsReliability |