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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making DACI |  Operations Kepner-Tregoe |
|---|---|---|---|
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. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | High | Low | High |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min | 2-8 h |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | DACI Matrix, Decision Owner, Decision Log | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | DecisionRolesGovernanceAlignment | Problem solvingRoot causeDecisionOperations |
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