Atom feed

Atom Syndication Format feed. An XML language used for web feeds. Web feeds allow software programs to check for updates published on a website. Atom feeds allow each feed to contain multiple versions or formatting of course content for different devices. iTunes U allows up to 300 enclosures in a feed. However, for performance and usability, Apple recommends an upper limit of 50 enclosures in a feed. If a feed has a large number of enclosures, your content can be more difficult for users to search and browse in the iTunes U catalog, thus making your content less discoverable. Compare RSS feed.