API Design · Junior · Question 38 of 75

What's the benefit of a 'design-first' API approach?

✓Correct answer: The contract (e.g. OpenAPI) is agreed and reviewed before implementation, so front end and back end can work in parallel against it
2It makes the API faster at runtime
3It removes the need for tests

Explanation

Mock servers built from the spec let front-end developers start early. Code-first works too, but changes are easier to miss.

Further reading

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