All published stories are automatically submitted to the sitemap.
To access the sitemap go to Dashboard > Domain & Hosting:

The stories sitemap can be submitted to Google Search Console by following these instructions: https://support.google.com/webmasters/answer/7451001#

All stories published on the stories.nws.ai domain become part of the NWS.AI global sitemap and automatically get submitted to Google Search Console.

Search engines like Google read this file to more intelligently crawl your site. A sitemap tells the crawler which files you think are important in your site, and also provides valuable information about these files.