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| Criterion |  Architecture Architecture Decision Record |  Decision Making PERT Estimation |
|---|---|---|
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. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. |
Complexitydifferent | Low | Medium |
Timesame | 15-45 min | 15-45 min |
Participantsdifferent | 1-3 | 1-8 |
Formatdifferent | Async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | PERT Estimate, Expected Value, Risk Notes |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | EstimationUncertaintyRisk |
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