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| Criterion |  DevOps Blameless Postmortem |  Operations Fault Tree Analysis |  DevOps Incident Timeline Analysis |  Operations MORT 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. | 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 an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. | 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. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 30-90 min | 2-6 h | 60-180 min | Mehrere Tage bis Wochen |
Participantsdifferent | 3-12 | 3-8 | 3-10 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RiskRoot causeSafety | IncidentTimelineSite Reliability Engineering | Root causeSafetySystemicIncident |