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| Criterion |  Operations Barrier Analysis |  Architecture arc42 |  Architecture SAAM (Software Architecture Analysis Method) |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | SAAM helps teams judge an architecture’s suitability for selected tasks and changes. It is particularly useful for examining modifiability and comparing architecture alternatives with clear reasoning. | 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. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 2-4 h | 1-2 Tage | Preparation, scenario analysis, and findings review; effort depends on scope | 1-3 h |
Participantsdifferent | 2-6 | 1-4 | Architecture experts and stakeholders for scenarios and weighting | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Architecture Document, Context View, Runtime View, Deployment View | Domain functions mapped to components and connections, Quality attributes and evaluation criteria, Typical tasks and their effects on the architecture, Reasoned evaluation or comparison of alternatives | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | Root causeSafetyIncident | ArchitectureDocumentationCommunication | ArchitectureChangeAnalysisComparisonQuality | Root causeTreeIncidentQuality |