What defines a Backend API?

• A. An interface for frontend developers
• B. An API that interacts with client-side services
• C. An API for integrating with backend services
• D. An API exclusive to database management

Answer: (C)

A Backend API is primarily defined as an API that facilitates interaction with backend services, which can include databases, application servers, and other services necessary for processing requests from clients. This type of API connects the user interface or client applications to server-side processes and data storage, enabling the retrieval, processing, and modification of data on behalf of the client application.

When considering the other options, while an interface for frontend developers might use a Backend API, it does not define what a Backend API is. The second option mentions interaction with client-side services, which is more relevant to the concept of frontend APIs that communicate with backend services rather than defining the backend API itself. The last choice refers to databases specifically, which, while a backend component, does not encompass the broader functionality of a Backend API that may involve various backend services beyond just database management.