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| Criterion |  Facilitation Timeline |  Architecture Architecture Decision Record |  Architecture C4 Model |
|---|---|---|---|
Purposedifferent | When a project, incident, or change process is only remembered in fragments, Timeline brings the sequence back into a readable form. It makes turning points, precursors, and after-effects recognizable over the course of time. | 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. |
Complexitysame | Low | Low | Low |
Timedifferent | 30-90 min | 15-45 min | 1-4 h |
Participantsdifferent | 2-12 | 1-3 | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Timeline, Milestones, Insight Notes | ADR File, Decision Log, Rationale | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | TimelineFacilitationSequence | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationVisualization |
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