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| Criterion |  Operations Fault Tree Analysis |  Architecture Architecture Communication Canvas |  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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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 |
Timedifferent | 2-6 h | 60-120 min | 15-30 min |
Participantsdifferent | 3-8 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Root cause notes, Countermeasures |
Tagsno overlap | RiskRoot causeSafety | ArchitectureCommunicationStakeholdersCanvas | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
