““What most users do not realize is that to be a RESTful architecture the web service must satisfy formal constraints. In particular, the application must be separated into a client-server model and the server must remain completely stateless. No client context may be stored on the server and resources should also be uniquely and uniformly identified. The client also should be able to navigate the API and transition state through the use of links and metadata in the resource responses. The client should not assume the existence of resources or actions other than a few fixed entry points, such as the root of the API.””
