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| Criterion |  Facilitation 1-2-4-All |  Architecture Request for Comments |  Architecture arc42 |  Architecture C4 Model |
|---|---|---|---|---|
Purposedifferent | When many people in a group too rarely get to speak, 1-2-4-All distributes thinking time more fairly. The format builds participation step by step and makes quiet or still-unformed thoughts usable faster. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 10-20 min | 1-3 Wochen vom Draft bis zur Entscheidung | 1-2 Tage | 1-4 h |
Participantsdifferent | 4-100+ | 3-20 Reviewer | 1-4 | 1-5 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Idea List, Shared Insights, Emergent Themes | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Architecture Document, Context View, Runtime View, Deployment View | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | FacilitationInclusionIdeation | ArchitectureDecisionAsyncGovernance | ArchitectureDocumentationCommunication | ArchitectureCommunicationVisualization |