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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making DACI |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|
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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | High | Low | High |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min | 2-6 h |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-10 | 3-10 |
Formatdifferent | 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 | DACI Matrix, Decision Owner, Decision Log | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | DecisionRolesGovernanceAlignment | RiskQualityOperationsRoot cause |
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