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Your team needs to change the API's response format in a way that will break existing integrations. How do you ship it?

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Developer trust in an API rests on stability. The interviewer wants versioning, a long overlap, migration help and measurement, with the breaking change treated as a cost to minimise.

Updated Oct 2026 · Original practice questions with worked answers and teaching rubrics. Our editorial policy explains the sources, review process and limits.

Developer trust in an API rests on stability. The interviewer wants versioning, a long overlap, migration help and measurement, with the breaking change treated as a cost to minimise.

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