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| Criterion |  Operations Root Cause Tree Analysis |  Agile Three Amigos |  Agile Acceptance Criteria Workshop |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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 a story needs clear checkpoints before implementation, it sharpens expectation and scope together. It sorts work by value, risk, and delivery ability. The result is captured as Acceptance Criteria and a Story Update. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 1-3 h | 15-30 min | 20-40 min pro Story |
Participantsdifferent | 2-8 | 3 | 3-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Clarified Story, Test Examples, Open Questions | Acceptance Criteria, Story Update |
Tagsno overlap | Root causeTreeIncidentQuality | CollaborationBehavior-Driven DevelopmentQualityRefinement | AgileRequirementsRefinementBehavior-Driven Development |
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