What Is Feed?
In SEO, a "feed" typically refers to an RSS feed (Really Simple Syndication). It is a web feed in XML format to keep users up with news and updates from their favourite websites without having to constantly visit those websites.
An RSS feed publishes new blog posts, news stories, or other information on a regular schedule in a standard format.
People can sign up to get these feeds sent to an RSS reader. The RSS reader collects together the latest posts and news from all the feeds someone is following.