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Selected:PERT EstimationRisk MatrixATAM (Architecture Tradeoff Analysis Method)Architecture Communication Canvas
| Criterion |  Decision Making PERT Estimation |  Decision Making Risk Matrix |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | 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. | When a project faces many possible disruptions, it quickly becomes unclear which risks deserve attention first. It separates options, evaluation criteria, and open risks. The result is captured as a Risk Matrix and a Top Risk List. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 15-45 min | 30-60 min | Several meetings plus preparation and analysis; total effort depends on scope | 60-120 min |
Participantsdifferent | 1-8 | 3-10 | Evaluation team, architects, and relevant stakeholders | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | PERT Estimate, Expected Value, Risk Notes | Risk Matrix, Top Risk List | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | EstimationUncertaintyRisk | RiskDecisionPrioritizationAssessment | ArchitectureQualityRiskTradeoffsStakeholders | ArchitectureCommunicationStakeholdersCanvas |