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| Criterion |  Product Strategy Lean Canvas |  UX Research Tree Testing |  Operations 8D Problem Solving |  UX Research Card Sorting |
|---|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | When a navigation exists but search paths still fail, tree testing checks findability without visual distraction. The method shows whether labels, levels, and paths really lead to the intended destination. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. |
Complexitydifferent | Medium | Medium | High | Low |
Timedifferent | 45-90 min | 1-2 Tage | 1-6 Wochen | 20-45 min |
Participantsdifferent | 1-6 | Based on research question | 4-10 | Based on research question |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | Findability Metrics, Path Analysis, Revised IA | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Content groups, Label set, IA hypotheses |
Tagsno overlap | StartupLeanAssumptionsBusiness model | Information architectureNavigationFindability | QualityProblem solvingRoot cause | Information architectureNavigationStructure |