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Selected:ATAM (Architecture Tradeoff Analysis Method)DACIRequest for CommentsDecision Rights Mapping
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making DACI |  Architecture Request for Comments |  Decision Making Decision Rights Mapping |
|---|---|---|---|---|
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. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. |
Complexitydifferent | High | Low | Medium | Medium |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min | 1-3 Wochen vom Draft bis zur Entscheidung | 90-180 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-10 | 3-20 Reviewer | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | 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 | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Decision Rights Matrix, Agreement |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | DecisionRolesGovernanceAlignment | ArchitectureDecisionAsyncGovernance | DecisionGovernanceAlignmentResponsibility |