REpresentational State Transfer (REST) is an architecture style that relies on six guiding constraints: stateless, client-server, cacheable, layered system, code on demand (optional), and uniform interface. Web service APIs that adhere to the REST architecture are called RESTful APIs.
Many modern internet applications, such as Microsoft Azure, Twitter, LinkedIn, Google, PayPal, and Amazon, use the RESTful architecture style in their APIs, which allows easy integration over the HTTP communication protocol. The primary reason RESTful APIs are useful in cloud and web applications is that the calls are stateless. This means each request or interaction is independent. Nothing has to be saved that has to be remembered by the next request, ...
