OAuth and REST web services

Representational state transfer (REST) is an architectural style for distributed hypermedia systems like the World Wide Web. REST was introduced in 2000 by Roy Fielding in his doctoral dissertation. REST uses HTTP to access and manipulate representations of resources through a standardized interface and uniform resource identifiers. OAuth allows secure authorization of APIs by issuing access tokens to applications after user permission is granted. Popular Java libraries for building REST web services and clients include Jersey, JBoss RESTEasy, Apache CXF, and Restlet.