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| Criterion |  Knowledge Modeling IBIS |  Decision Making Pre-Mortem |  Architecture arc42 |
|---|---|---|---|
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. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-3 h | 20–45 min | 1-2 Tage |
Participantsdifferent | 2-8 | Small cross-functional group | 1-4 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Issue Map, Positions, Argument Notes | Risk list, Mitigation plan, Assumption log | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | RationaleKnowledgeDecision | RiskDecisionFailurePlanning | ArchitectureDocumentationCommunication |
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