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| Criterion |  Decision Making Delphi Method |  Delivery Communication Plan |  Architecture C4 Model |  Architecture arc42 |
|---|---|---|---|---|
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. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | 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. | 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. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | 1-4 Wochen | 45-90 min | 1-4 h | 1-2 Tage |
Participantsdifferent | 6-30 Experten | 2-6 | 1-5 | 1-4 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Communication Plan, Channel Matrix, Message Cadence | Context Diagram, Container Diagram, Component Diagram | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ForecastingExpertsDecisionStrategy | CommunicationStakeholdersDeliveryPlanning | ArchitectureCommunicationVisualization | ArchitectureDocumentationCommunication |