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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Facilitation Alignment Mapping |  Decision Making DACI |
|---|---|---|---|
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 several people work toward one goal but hold different mental maps, Alignment Mapping makes the discrepancies visible. It arranges goals, assumptions, and priorities so shared direction becomes verifiable. | 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. |
Complexitydifferent | High | Medium | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 1-2 h | 30-60 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 4-12 | 2-10 |
Formatdifferent | Workshop + async | Workshop | 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 | Alignment Map, Open Issues, Decision Questions | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | AlignmentStakeholdersStrategyFacilitation | DecisionRolesGovernanceAlignment |
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