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| Criterion |  Decision Making Assumption Surfacing |  Decision Making DACI |  Architecture arc42 |  Architecture Request for Comments |
|---|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 45-90 min | 30-60 min | 1-2 Tage | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 2-8 | 2-10 | 1-4 | 3-20 Reviewer |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | DACI Matrix, Decision Owner, Decision Log | Architecture Document, Context View, Runtime View, Deployment View | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | DecisionRolesGovernanceAlignment | ArchitectureDocumentationCommunication | ArchitectureDecisionAsyncGovernance |