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| Criterion |  Knowledge Modeling IBIS |  Operations Kepner-Tregoe |  Architecture Request for Comments |  Operations 8D Problem Solving |
|---|---|---|---|---|
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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 1-3 h | 2-8 h | 1-3 Wochen vom Draft bis zur Entscheidung | 1-6 Wochen |
Participantsdifferent | 2-8 | 2-8 | 3-20 Reviewer | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Issue Map, Positions, Argument Notes | Problem Analysis, Decision Analysis, Risk Plan | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | RationaleKnowledgeDecision | Problem solvingRoot causeDecisionOperations | ArchitectureDecisionAsyncGovernance | QualityProblem solvingRoot cause |