Benefits of using XML sitemap?

[jonsen]

XML Sitemaps are important in seo process. It helps search engines to crawl your site. An XML file is a lists all the URLs for a website along with the information about meta data of the website url. The metadata includes the details of date last updated, and how often the content on the page changes.

[bestbvs]

XML sitemap is most important to create when you have a dynamic website or a website with thousands of pages. Giving the search engines priority information. There is an optional tag in the site map for the priority of the page.
HTML sitemaps are create to make the site user friendly.