The answer
Yes. A single deployed application can define clear boundaries between modules or HTTP endpoints. Boundaries describe responsibilities and contracts, even when deployment remains shared.
Why should an application define clear API boundaries?
Can an API boundary exist inside a monolithic application?
More FAQs in Why should an application define clear API boundaries?
Keeping database access behind server-side operations creates a place to enforce permissions and validation consistently. Components can then depend on documented behavior rather than storage details.
It defines predictable error categories and useful field-level details without exposing internal secrets. The interface can then display appropriate messages and preserve information the user already entered.
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