RSS is a web feed that allows users and applications to access updates to websites in a standardized, computer-readable format. These feeds can, for example, allow a user to keep track of many different websites in a single news aggregator.
It stand for Really Simple Syndication or Rich Site Summary, uses several standard web feed formats to publish content in a structured XML file for syndication. An XML file in this format is called an RSS Feed. This format allows automatic syndication of data and the XML file ensure compatibility across numerous machines and programs.
The data included in the feed usually includes any content that is regularly updated on blogs such as news headlines or media. RSS allows users to receive updates from their favorite sites automatically rather than having to manually check them. They can subscribe to a website’s feed using RSS feed readers.
WordPress automatically generates an RSS feed for posts and comments in RSS 2 and Atom feed formats. WordPress themes then add a meta tag in the source code which allows feed reading software, news aggregators, and feeds crawlers to automatically discover the feed.