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| Criterion |  Operations Fault Tree Analysis |  Operations Barrier Analysis |  Agile Example Mapping |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | When a story carries business rules and exceptions, it brings clarity before implementation. It makes examples, open questions, and boundaries visible enough that the logic becomes jointly sound. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | High | Medium | Low | Low |
Timedifferent | 2-6 h | 2-4 h | 30-60 min | 15-30 min |
Participantsdifferent | 3-8 | 2-6 | 3-7 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Example Map, Acceptance Criteria, Open Questions | Root cause notes, Countermeasures |
Tagsno overlap | RiskRoot causeSafety | Root causeSafetyIncident | Behavior-Driven DevelopmentRequirementsExamplesRefinement | Root causeIncidentLeanProblem solving |