1. The part that is left over after something has been removed; remainder. 2. That or those remaining: The beginning was boring, but the rest was interesting. The rest are arriving later.
A REST API is an application programming interface (API) that conforms to the design principles of the representational state transfer (REST) architectural style, a style used to connect distributed hypermedia systems. REST APIs are sometimes referred to as RESTful APIs or RESTful web APIs.
REST is the abbreviation that stands for Representational State Transfer. It is a powerful architectural style that is applied in the development of networked applications.