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| Criterion |  Facilitation Expectation Mapping |  Architecture Request for Comments |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making DACI |
|---|---|---|---|---|
Purposedifferent | When roles, interfaces, or projects fail because of differing expectations, Expectation Mapping surfaces these differences. It shows what each side takes for granted and where the pictures diverge. | 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. | 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 | Low | Medium | High | Low |
Timedifferent | 45-90 min | 1-3 Wochen vom Draft bis zur Entscheidung | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min |
Participantsdifferent | 3-12 | 3-20 Reviewer | Evaluation team, architects, and relevant stakeholders | 2-10 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Expectation Map, Alignment Notes, Agreements | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | 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 | AlignmentStakeholdersTeam | ArchitectureDecisionAsyncGovernance | ArchitectureQualityRiskTradeoffsStakeholders | DecisionRolesGovernanceAlignment |