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| Criterion |  Architecture C4 Model |  Operations Failure Mode and Effects Analysis |  Architecture Architecture Communication Canvas |  Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Low | High | Medium | Low |
Timedifferent | 1-4 h | 2-6 h | 60-120 min | 30-60 min |
Participantsdifferent | 1-5 | 3-10 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | FMEA Table, Risk Priority, Mitigation Actions | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | ArchitectureCommunicationVisualization | RiskQualityOperationsRoot cause | ArchitectureCommunicationStakeholdersCanvas | Root causeQualityOperations |