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| Criterion |  Knowledge Modeling IBIS |  Architecture Request for Comments |  Decision Making Risk Matrix |
|---|---|---|---|
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. | 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. | When a project faces many possible disruptions, it quickly becomes unclear which risks deserve attention first. It separates options, evaluation criteria, and open risks. The result is captured as a Risk Matrix and a Top Risk List. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 1-3 h | 1-3 Wochen vom Draft bis zur Entscheidung | 30-60 min |
Participantsdifferent | 2-8 | 3-20 Reviewer | 3-10 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Issue Map, Positions, Argument Notes | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Risk Matrix, Top Risk List |
Tags1 shared | RationaleKnowledgeDecision | ArchitectureDecisionAsyncGovernance | RiskDecisionPrioritizationAssessment |
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