RSS is an XML file that stores data about pages (posts, news) indicating their name, short description and time of its publication. It's useful to keep track of new posts on sites without checking each site manually. To view RSS feeds you need to use special applications — RSS readers, they are available on all popular desktop and mobile platforms.
This feature is useful in the content project, such as a blog made on Tilda. A blog readers will be able to add a website to their feed and follow the new posts.
To add a feed on the Tilda site, go to site settings → More, check the "Enable RSS feed generation" and republish all pages.