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| Criterion |  UX Research Affinity Diagramming |  Architecture Request for Comments |  Operations A3 Problem Solving |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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 a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 45–90 min | 1-3 Wochen vom Draft bis zur Entscheidung | 45-90 min | 15-45 min |
Participantsdifferent | 3-10 | 3-20 Reviewer | 2-5 | 1-3 |
Formatdifferent | Workshop | Async | Workshop + async | Async |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | A3 Report, Action Plan, Root Cause Analysis | ADR File, Decision Log, Rationale |
Tagsno overlap | SynthesisQualitativeRoot cause | ArchitectureDecisionAsyncGovernance | LeanProblem solvingCoachingOperations | ArchitectureRationaleDocumentationGovernance |