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| Criterion |  Operations 8D Problem Solving |  Product Discovery Test Card |  UX Design Lean UX Canvas |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | The Lean UX Canvas helps clarify user behavior, touchpoints, and concept decisions. It makes assumptions and desired outcomes visible and captures the result as a completed canvas, hypothesis list, and first experiment. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 1-6 Wochen | 20-35 min | 2-3 h | 25-40 min |
Participantsdifferent | 4-10 | 1-5 | 3-8 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Test Card with a pre-set threshold | Completed Lean UX Canvas, Hypothesis list, First experiment | Learning Card with evidence and next action |
Tagsno overlap | QualityProblem solvingRoot cause | ExperimentsValidationDiscoveryHypothesis | CanvasHypothesisOutcomesDiscovery | ExperimentsValidationDiscoveryLearning |