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Selected:Three AmigosAcceptance Criteria WorkshopATAM (Architecture Tradeoff Analysis Method)Specification by Example
| Criterion |  Agile Three Amigos |  Agile Acceptance Criteria Workshop |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Agile Specification by Example |
|---|---|---|---|---|
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 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. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | 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. |
Complexitydifferent | Low | Low | High | Medium |
Timedifferent | 15-30 min | 20-40 min pro Story | Several meetings plus preparation and analysis; total effort depends on scope | 60-90 min pro Feature |
Participantsdifferent | 3 | 3-6 | Evaluation team, architects, and relevant stakeholders | 3-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Clarified Story, Test Examples, Open Questions | Acceptance Criteria, Story Update | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Example Table, Acceptance Tests |
Tagsno overlap | CollaborationBehavior-Driven DevelopmentQualityRefinement | AgileRequirementsRefinementBehavior-Driven Development | ArchitectureQualityRiskTradeoffsStakeholders | AgileRequirementsExamplesBehavior-Driven Development |