Question d’entretien chez iwoca

8. API Versioning: The API currently returns a single address, but now needs to support multiple addresses. How would you evolve the endpoint without breaking existing clients? (Looking for: either a new endpoint version, or temporarily exposing both address and addresses fields.) How would you coordinate the frontend rollout? (e.g. first upgrade the frontend to read the new addresses field — showing an error telling the user to refresh if it unexpectedly detects multiple addresses — then later upgrade it to fully support multiple addresses.)