There is one URL path on every WordPress website that most people don’t know about – /feed/. A feed, like an RSS feed or an Atom feed, provides an alternative way of reading content. These are basically just endpoints returning all of your posts in a structured format (XML).
Feeds used to be much more popular in the early days of the internet. They are the foundation of what’s called web syndication. Imagine you regularly read 10 blogs. Normally, you’d have to visit every one of those blogs every day to check if there are any new posts. But if you were a little more tech savvy, you could use a feed reader and give it a link to the feed from each of those blogs. If you did that, the feed reader would check for new posts automatically and would even allow you to read them in the reader itself, with a unified interface.
The default /feed/ path is an RSS 2.0 feed, but there are a few more. For example, the path /feed/atom/ contains the same post information but using the Atom feed structure. Feeds are also available for other content types, like comments (/comments/feed/), categories (/category/sci-fi/feed/), etc. I’m not going to include a feed example as it’s a little verbose. Google it (or check it on your own WordPress install) to see it for yourself.