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| Criterion |  Architecture C4 Model |  UX Research Affinity Diagramming |  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. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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. |
Complexitysame | Low | Low | Low |
Timedifferent | 1-4 h | 45–90 min | 30-60 min |
Participantsdifferent | 1-5 | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Theme clusters, Insight statements, Opportunity areas | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | ArchitectureCommunicationVisualization | SynthesisQualitativeRoot cause | Root causeQualityOperations |
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