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| Criterion |  Decision Making Three-Point Estimation |  Decision Making PERT Estimation |  Architecture arc42 |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | A single estimate for effort, time, or risk often looks too smooth for the real uncertainty behind it. It separates options, evaluation criteria, and open risks. The result is captured as a Three-Point Estimate, Risk Range, and Assumption Notes. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 10-30 min je Item | 15-45 min | 1-2 Tage | 15-45 min |
Participantsdifferent | 1-8 | 1-8 | 1-4 | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Three-Point Estimate, Risk Range, Assumption Notes | PERT Estimate, Expected Value, Risk Notes | Architecture Document, Context View, Runtime View, Deployment View | ADR File, Decision Log, Rationale |
Tagsno overlap | EstimationUncertaintyForecasting | EstimationUncertaintyRisk | ArchitectureDocumentationCommunication | ArchitectureRationaleDocumentationGovernance |