What is REST?
REST (Representational State Transfer) is an architectural style for web APIs built around resources identified by URLs and manipulated with standard HTTP methods (GET, POST, PUT, DELETE). A truly RESTful API is stateless — each request contains everything the server needs — which makes it easy to cache and scale horizontally.
Example
GET /users/42 retrieves user 42; DELETE /users/42 removes it.
Related tool
Try it on ToolSphere — runs entirely in your browser, nothing is uploaded to a server.