What is REST? This term “REST” was first defined by Roy Fielding in 2000. It stands for Representational State Transfer(REST) . Actually REST is architectural model and design for serve network applications.The most common application of REST is the World Wide Web itself, which used REST as a basis for HTTP 1.1 development. What is the REST API? A RESTful API is an application program interface (API) that uses HTTP requests to GET, PUT, POST and DELETE data. Representational state transfer (REST), which is used by browsers, can be thought of as the language of the Internet. REST architectural Model REST- RE presentational S tate T ransfer Resource-based Representation Six Constraints Client-Server Stateless Cacheable Uniform Interface Layered System Code-On-Demand The REST architectural style describes six constraints. These constraints, applied to the architecture, were originally communicated by Roy Fielding in his doctoral dissertation a...