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Selected:DACIATAM (Architecture Tradeoff Analysis Method)RACI MatrixFailure Mode and Effects Analysis
| Criterion |  Decision Making DACI |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations RACI Matrix |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | With unclear responsibilities across several roles or areas, the method creates unambiguous accountability logic. It reduces friction because decision, execution, contribution, and information become separately visible. | 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 | Low | High | Low | High |
Timedifferent | 30-60 min | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 2-6 h |
Participantsdifferent | 2-10 | Evaluation team, architects, and relevant stakeholders | 2-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | DACI Matrix, Decision Owner, Decision Log | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | RACI Matrix, Responsibility Map, Decision Notes | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | DecisionRolesGovernanceAlignment | ArchitectureQualityRiskTradeoffsStakeholders | RolesResponsibilityGovernanceOperations | RiskQualityOperationsRoot cause |