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| Criterion |  Agile Three Amigos |  Agile Specification by Example |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When story, test, and implementation could drift apart, it brings business perspective, engineering, and quality together early. It prevents a story from being read differently only late in the process. | When business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. |
Complexitydifferent | Low | Medium | Low | High |
Timedifferent | 15-30 min | 60-90 min pro Feature | 15-30 min | 1-6 Wochen |
Participantsdifferent | 3 | 3-6 | 2-6 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Clarified Story, Test Examples, Open Questions | Example Table, Acceptance Tests | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | CollaborationBehavior-Driven DevelopmentQualityRefinement | AgileRequirementsExamplesBehavior-Driven Development | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |