Editing Web 2.0 (section)

==Distribution of media==

===XML and RSS===
Many regard syndication of site content as a Web 2.0 feature. Syndication uses standardized protocols to permit end-users to make use of a site's data in another context (such as another Web site, a [[browser plugin]], or a separate desktop application). Protocols permitting syndication include [[RSS (file format)|RSS]] (really simple syndication, also known as Web syndication), [[Resource Description Framework|RDF]] (as in RSS 1.1), and [[Atom (standard)|Atom]], all of which are [[XML]]-based formats. Observers have started to refer to these technologies as [[Web feed]]s.

Specialized protocols such as [[FOAF (software)|FOAF]] and [[XHTML Friends Network|XFN]] (both for social networking) extend the functionality of sites and permit end-users to interact without centralized Web sites.

===Web APIs===
{{Main|Web API}}
Web 2.0 often uses machine-based interactions such as [[Representational State Transfer|REST]] and [[SOAP]]. Servers often expose proprietary [[Application programming interface]]s (APIs), but standard APIs (for example, for posting to a blog or notifying a blog update) have also come into use. Most communications through APIs involve [[XML]] or [[JSON]] payloads. REST APIs, through their use of self-descriptive messages and [[HATEOAS|hypermedia as the engine of application state]], should be self-describing once an entry [[Uniform Resource Identifier|URI]] is known. [[Web Services Description Language]] (WSDL) is the standard way of publishing a SOAP Application programming interface and there are [[List of web service specifications|a range of Web service specifications]].