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Turning what the business says into a model that survives contact with its exceptions, and where domain-driven design earns its keep.
3 questions in Working in a Domain.
Evaluate architectural trade-offs in Domain Modelling in Practice between consistency, throughput, operational complexity, and data durability at scale. Use this domain knowledge answer to show the decision, trade-off, and evidence rather than a memorised definition.
Model the state changes and invariants rather than the nouns the business names, and go looking for reversal, amendment, partial completion and manual override before committing to a shape. Domain-driven design earns its keep where rules are contested; on CRUD and reporting it is ceremony.
Judgement is an unwritten rule plus a genuine discretion, so separate the two. Sample real decisions to find the factors deciding most cases, automate the unambiguous ends, and model the discretionary middle as a recorded decision carrying its inputs, recommendation and reason.