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| Criterion |  UX Research Card Sorting |  Architecture Architecture Decision Record |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | When content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitysame | Low | Low | Low |
Timedifferent | 20-45 min | 15-45 min | 15-30 min |
Participantsdifferent | Based on research question | 1-3 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop |
Outputdifferent | Content groups, Label set, IA hypotheses | ADR File, Decision Log, Rationale | Root cause notes, Countermeasures |
Tagsno overlap | Information architectureNavigationStructure | ArchitectureRationaleDocumentationGovernance | Root causeIncidentLeanProblem solving |
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