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| Criterion |  UX Research Usability Testing |  Innovation Lean Startup |  Architecture ARID (Active Reviews for Intermediate Designs) |  Innovation Design Sprint |
|---|---|---|---|---|
Purposedifferent | 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 uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. |
Complexitydifferent | Medium | Medium | Medium | High |
Timedifferent | 1-2 h je Session | Wochen bis Monate je Lernzyklus | 2–4 h review as a planning range; preparation and evaluation additional | 4-5 Tage |
Participantsdifferent | Based on research question | 2-8 | Designers, developers as users, and facilitation | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Usability Issues, Severity List, Recommendations | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Prototype, Test Findings, Decision Rationale |
Tags1 shared | ValidationUXPrototype | LeanStartupValidationMVP | ArchitectureEngineeringFeedbackValidationTasks | Design sprintPrototypeValidationInnovation |