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| Criterion |  Knowledge Modeling IBIS |  Decision Making Assumption Surfacing |  Architecture Request for Comments |  Decision Making DACI |
|---|---|---|---|---|
Purposedifferent | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | 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. | 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 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 | Medium | Low | Medium | Low |
Timedifferent | 1-3 h | 45-90 min | 1-3 Wochen vom Draft bis zur Entscheidung | 30-60 min |
Participantsdifferent | 2-8 | 2-8 | 3-20 Reviewer | 2-10 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Issue Map, Positions, Argument Notes | Assumption List, Critical Assumptions, Learning Plan | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | DACI Matrix, Decision Owner, Decision Log |
Tags1 shared | RationaleKnowledgeDecision | AssumptionsRiskDecisionDiscovery | ArchitectureDecisionAsyncGovernance | DecisionRolesGovernanceAlignment |