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| Criterion |  Operations Change Analysis |  Operations Barrier Analysis |  Architecture arc42 |  Operations MORT Analysis |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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 | Medium | Low | High |
Timedifferent | 45-120 min | 2-4 h | 1-2 Tage | Mehrere Tage bis Wochen |
Participantsdifferent | 2-6 | 2-6 | 1-4 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Architecture Document, Context View, Runtime View, Deployment View | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | Root causeSafetyIncident | ArchitectureDocumentationCommunication | Root causeSafetySystemicIncident |