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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Risk Matrix |  Decision Making Assumption Surfacing |  Delivery Cost of Delay |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. |
Complexitydifferent | High | Low | Low | High |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min | 45-90 min | 90-180 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 3-10 | 2-8 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Risk Matrix, Top Risk List | Assumption List, Critical Assumptions, Learning Plan | CoD Table, Prioritization Sequence |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | RiskDecisionPrioritizationAssessment | AssumptionsRiskDecisionDiscovery | PrioritizationDeliveryEconomicsDecision |