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| Criterion |  Architecture C4 Model |  Product Strategy Impact Mapping |  Architecture Architecture Decision Record |  Delivery Communication Plan |
|---|---|---|---|---|
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 a goal needs to be connected to several possible paths, it shows chains of impact instead of feature lists. It connects business goal, behavior change, and measures. | 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. | 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. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 1-4 h | 45-90 min | 15-45 min | 45-90 min |
Participantsdifferent | 1-5 | 3-8 | 1-3 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Impact Map, Outcome Hypotheses, Delivery Options | ADR File, Decision Log, Rationale | Communication Plan, Channel Matrix, Message Cadence |
Tagsno overlap | ArchitectureCommunicationVisualization | OutcomesStrategyBehaviorPlanning | ArchitectureRationaleDocumentationGovernance | CommunicationStakeholdersDeliveryPlanning |