The shops RSS functionality allows you to add RSS feeds to your storefront categories and/or to export RSS datefeeds.
The generated data feeds are RSS 1.0 compliant.
The RSS settings tab:

The RSS settings tab is used to enable or disable the storefront RSS functionality
“Click” on the “Save Changes” button to save your setting changes.
The export data feed tab:

The export data feed tab is used to export and save a RSS data feed on your local computer for further processing.
“Click” on the “Export Datafeed” button to export a RSS data feed.
The update site RSS tab:

The update site RSS tab is used to update your site’s RSS feeds that are accessible through the storefront.
“Click” on the “Update” button to update your site’s RSS data feed.
Please note: The RSS functionality needs to be enabled for customers to access the generated RSS feeds.