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| Criterion |  Decision Making Delphi Method |  Architecture Architecture Decision Record |  Architecture C4 Model |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | High | Low | Low | Medium |
Timedifferent | 1-4 Wochen | 15-45 min | 1-4 h | 60-120 min |
Participantsdifferent | 6-30 Experten | 1-3 | 1-5 | 2-8 |
Formatdifferent | Async | Async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | ADR File, Decision Log, Rationale | Context Diagram, Container Diagram, Component Diagram | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | ForecastingExpertsDecisionStrategy | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationVisualization | ArchitectureCommunicationStakeholdersCanvas |