Your question is Implement Backend Service APIs. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're designing APIs for a new backend service that will be consumed by multiple internal and external clients. Before implementation begins, you want to make sure the API design supports reliability, maintainability, and future iteration without creating avoidable integration problems.
What are the key considerations when implementing APIs for backend services?