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| Criterion |  Architecture Architecture Decision Record |  Architecture C4 Model |  Product Strategy Lean Canvas |
|---|---|---|---|
Purposedifferent | 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. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 15-45 min | 1-4 h | 45-90 min |
Participantsdifferent | 1-3 | 1-5 | 1-6 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Context Diagram, Container Diagram, Component Diagram | Lean Canvas, Core Assumptions, Experiment Backlog |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationVisualization | StartupLeanAssumptionsBusiness model |
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