REST is an architectural style used in web development to build scalable and maintainable services. It relies on a stateless, client-server, cacheable communications protocol — the HTTP protocol. RESTful services use standard HTTP methods like GET, POST, PUT, and DELETE for interacting with resources. In REST architecture, data and functionality are considered resources and are accessed using Uniform Resource Identifiers (URIs). The state of these resources at any given timestamp is called a representation. The principles of REST aim to make web services perform well, be scalable, simple, and easy to modify and extend.

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