RSS stands for Really Simple Syndication. It refers to files easily read by a computer called XML files that automatically update information. This information is fetched by a user's RSS feed reader that converts the files into the latest updates from websites in an easy to read format.
RSS stands for “really simple syndication,” or, depending on who you ask, “rich site summary.” At its heart, RSS is just simple text files with basic updated information—news pieces, articles, that sort of thing. That stripped-down content is usually plugged into what is called a “feed reader” or an interface that quickly converts the RSS text files into a stream of the latest updates from around the web.