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Selected:Barrier AnalysisArchitecture Decision RecordFailure Mode and Effects AnalysisFault Tree Analysis
| Criterion |  Operations Barrier Analysis |  Architecture Architecture Decision Record |  Operations Failure Mode and Effects Analysis |  Operations Fault 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. | 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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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. |
Complexitydifferent | Medium | Low | High | High |
Timedifferent | 2-4 h | 15-45 min | 2-6 h | 2-6 h |
Participantsdifferent | 2-6 | 1-3 | 3-10 | 3-8 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | ADR File, Decision Log, Rationale | FMEA Table, Risk Priority, Mitigation Actions | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | Root causeSafetyIncident | ArchitectureRationaleDocumentationGovernance | RiskQualityOperationsRoot cause | RiskRoot causeSafety |