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| Criterion |  Systems Thinking Future Reality Tree |  Architecture Request for Comments |  Architecture Architecture Decision Record |  Decision Making DACI |
|---|---|---|---|---|
Purposedifferent | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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 | High | Medium | Low | Low |
Timedifferent | 2-4 h | 1-3 Wochen vom Draft bis zur Entscheidung | 15-45 min | 30-60 min |
Participantsdifferent | 3-8 | 3-20 Reviewer | 1-3 | 2-10 |
Formatdifferent | Workshop | Async | Async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | ADR File, Decision Log, Rationale | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | ArchitectureDecisionAsyncGovernance | ArchitectureRationaleDocumentationGovernance | DecisionRolesGovernanceAlignment |