Video lesson by #RankYa details what Extensible Markup Language XML is and best practices for submitting XML sitemaps for Google Search Engine Optimization SEO

How do you create XML Sitemaps? Easiest way to generate Extensible Markup Language sitemap is by using tools, software programs or online XML sitemap generators
https://code.google.com/archive/p/sitemap-generators/wikis/SitemapGenerators.wiki

Basically XML sitemaps has .xml file extension and contain set of URLs using Sitemap protocol with location and last modification date and time information. To learn more and see examples visit:
https://www.sitemaps.org/protocol.html

Google recommends to build and submit a sitemap using Google Search Console
https://developers.google.com/search/docs/advanced/sitemaps/build-sitemap

Google search engine understands different Sitemap formats such as XML
RSS, mRSS, and Atom 1.0 and even Text.

Also SEO for Google has different guidelines for Video Images and for Google News

Video sitemaps and alternatives
https://developers.google.com/search/docs/advanced/sitemaps/video-sitemaps

Image sitemaps
https://developers.google.com/search/docs/advanced/sitemaps/image-sitemaps

Google News sitemaps
https://developers.google.com/search/docs/advanced/sitemaps/news-sitemap