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| Criterion |  Operations MORT Analysis |  DevOps Blameless Postmortem |  Operations Fault Tree Analysis |  Operations Family Tree 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 critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | Mehrere Tage bis Wochen | 30-90 min | 2-6 h | 2-4 h |
Participantsdifferent | 2-6 | 3-12 | 3-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Postmortem Doc, Action Items, Timeline | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | Root causeSafetySystemicIncident | Site Reliability EngineeringIncidentLearningReliability | RiskRoot causeSafety | Root causePatternsIncidentSystemic |