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| Criterion |  Operations MORT Analysis |  DevOps Blameless Postmortem |  Operations 5 Whys |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | 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 single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. |
Complexitydifferent | High | Medium | Low | Medium |
Timedifferent | Mehrere Tage bis Wochen | 30-90 min | 15-30 min | 2-4 h |
Participantsdifferent | 2-6 | 3-12 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Postmortem Doc, Action Items, Timeline | Root cause notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tags1 shared | Root causeSafetySystemicIncident | Site Reliability EngineeringIncidentLearningReliability | Root causeIncidentLeanProblem solving | Root causeSafetyIncident |