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| Criterion |  Architecture Architecture Decision Record |  UX Research Usability Testing |  Innovation Design Thinking |  UX Research First-click Testing |
|---|---|---|---|---|
Purposedifferent | 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. | When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | When users immediately turn the wrong way on a screen or wireframe, first click testing checks initial orientation at high speed. The first click shows early whether expectation, labeling, and wayfinding fit together. |
Complexitydifferent | Low | Medium | High | Low |
Timedifferent | 15-45 min | 1-2 h je Session | 1 Tag bis mehrere Wochen | 1-2 Tage |
Participantsdifferent | 1-3 | Based on research question | 4-10 | 10-30 |
Formatdifferent | Async | Workshop + async | Workshop | Async |
Outputdifferent | ADR File, Decision Log, Rationale | Usability Issues, Severity List, Recommendations | Problem Statement, Prototype, Test Learnings | Click Heatmap, Success Rate, Design Recommendations |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ValidationUXPrototype | InnovationPrototypeResearch | UXNavigationFindabilityValidation |