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| Criterion |  Operations Root Cause Analysis |  Architecture Architecture Decision Record |  Operations MORT Analysis |  Operations Family Tree Analysis |
|---|---|---|---|---|
Purposedifferent | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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 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 | Medium | Low | High | Medium |
Timedifferent | 1-4 h | 15-45 min | Mehrere Tage bis Wochen | 2-4 h |
Participantsdifferent | 3-8 | 1-3 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | ADR File, Decision Log, Rationale | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | Root causeProblem solvingQualityIncident | ArchitectureRationaleDocumentationGovernance | Root causeSafetySystemicIncident | Root causePatternsIncidentSystemic |