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| Criterion |  Operations DMAIC |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making DACI |
|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | 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. |
Complexitydifferent | High | High | Low |
Timedifferent | 2-12 Wochen | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min |
Participantsdifferent | 3-10 | Evaluation team, architects, and relevant stakeholders | 2-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | 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 |
Tagsno overlap | Continuous improvementQualityProcess improvement | ArchitectureQualityRiskTradeoffsStakeholders | DecisionRolesGovernanceAlignment |
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