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| Criterion |  Delivery Communication Plan |  Delivery RAID Log |  Architecture C4 Model |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | 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. | Helps clarify scope, sequence, and delivery flow in concrete terms. It makes work, boundaries, and order steerable. The result is captured as a RAID Log and a source for status reporting. | 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. | 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 45-90 min | 30 min Setup, dann laufend | 1-4 h | 15-45 min |
Participantsdifferent | 2-6 | 1-3 maintaining, briefing for everyone | 1-5 | 1-3 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Communication Plan, Channel Matrix, Message Cadence | RAID Log, Status Report Source | Context Diagram, Container Diagram, Component Diagram | ADR File, Decision Log, Rationale |
Tagsno overlap | CommunicationStakeholdersDeliveryPlanning | RiskTrackingStakeholdersGovernance | ArchitectureCommunicationVisualization | ArchitectureRationaleDocumentationGovernance |