Answer
Keep older versions active.
Deprecate API versions gradually.
Provide documentation for migration.
Quick Answer
Backward compatibility while refactoring: don't rename, remove, or change required/optional on existing endpoint parameters. Add new endpoints rather than modifying old ones. Use API versioning to introduce breaking changes as v2. Mark old behavior as deprecated with deprecation warnings. Write contract tests that validate the existing API contract is preserved after each refactor.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ