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| Criterion |  Operations Root Cause Tree Analysis |  Agile Three Amigos |  Operations MORT Analysis |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | When story, test, and implementation could drift apart, it brings business perspective, engineering, and quality together early. It prevents a story from being read differently only late in the process. | 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 | Low | High |
Timedifferent | 1-3 h | 15-30 min | Mehrere Tage bis Wochen |
Participantsdifferent | 2-8 | 3 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Clarified Story, Test Examples, Open Questions | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | Root causeTreeIncidentQuality | CollaborationBehavior-Driven DevelopmentQualityRefinement | Root causeSafetySystemicIncident |
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