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Selected:EventStormingARID (Active Reviews for Intermediate Designs)Assumption MappingRiskiest Assumption Test
| Criterion |  Domain Modeling EventStorming |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Discovery Assumption Mapping |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|---|
Purposedifferent | When a domain consists of many events, rules, and states, it creates a shared modeling space for the team. It bundles language, flows, and boundaries before domain knowledge fragments into siloed views. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 2-8 h | 2–4 h review as a planning range; preparation and evaluation additional | 45-60 min | 1-2 Wochen pro Iteration |
Participantsdifferent | 5-12 | Designers, developers as users, and facilitation | 2-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Assumption map, Test backlog, Risk ranking | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | Domain-Driven DesignEventsDiscoveryWorkshop | ArchitectureEngineeringFeedbackValidationTasks | AssumptionsRiskExperimentsValidation | ExperimentsValidationDiscoveryAssumptions |