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| Criterion |  Operations 8D Problem Solving |  Operations Failure Mode and Effects Analysis |  Product Discovery Test 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | High | High | Low |
Timedifferent | 1-6 Wochen | 2-6 h | 20-35 min |
Participantsdifferent | 4-10 | 3-10 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | FMEA Table, Risk Priority, Mitigation Actions | Test Card with a pre-set threshold |
Tagsno overlap | QualityProblem solvingRoot cause | RiskQualityOperationsRoot cause | ExperimentsValidationDiscoveryHypothesis |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
