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| Criterion |  Architecture C4 Model |  UX Research Affinity Diagramming |  Decision Making RAPID |  Architecture Request for Comments |
|---|---|---|---|---|
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. | In complex management decisions, clarity is often missing about who recommends, who agrees, and who makes the decision. RAPID creates this assignment and stabilizes decisions across several levels. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 1-4 h | 45–90 min | 45-90 min | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 1-5 | 3-10 | 3-12 | 3-20 Reviewer |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Theme clusters, Insight statements, Opportunity areas | RAPID Role Map, Recommendation, Decision Log | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | ArchitectureCommunicationVisualization | SynthesisQualitativeRoot cause | DecisionRolesGovernance | ArchitectureDecisionAsyncGovernance |