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| Criterion |  DevOps Blameless Postmortem |  Systems Thinking Soft Systems Methodology |  Operations MORT Analysis |  Operations Barrier Analysis |
|---|---|---|---|---|
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. | Soft Systems Methodology helps explore unclear or politically charged problems systematically. Instead of forcing a quick answer, the method builds a shared understanding of perspectives and room for action. | 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. | 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 | Medium | High | High | Medium |
Timedifferent | 30-90 min | 0.5-3 Tage | Mehrere Tage bis Wochen | 2-4 h |
Participantsdifferent | 3-12 | 5-15 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Rich Picture, Root Definitions, Conceptual Models, Change Agenda | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Soft systemsComplexitySensemakingSystems thinking | Root causeSafetySystemicIncident | Root causeSafetyIncident |