If it’s a REST service that’s only used by a single application I’d typically call that a back-end . If it’s shared for multiple applications I’d probably call it an API. Really it’s two different names for the same thing.
Read moreIs REST API frontend or backend?
A REST API service usually comes ad a medium/”interface” for the frontend to consume data served from backend. Sometime even the backend uses REST API service to get data from another backend service (search microservices architecture on google).18 Tem 2016
Read moreIs API and backend same?
The back-end of an application is the part that stores and manages the data for the application. An API (Application Programming Interface) is a way for an application to share its back-end data with other applications .
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