XML sitemap it contain website urls google easy crawl the website.

XML Sitemap like a blueprint for your house and each web page were a room.
XML Sitemaps are important for SEO because they make it easier for Google to find your site’s pages—this is important because Google ranks web pages, not just websites.

xml sitemap is search engine friendly.search engine spider will crawl and index the website easily...

A Sitemap is an XML file that lists the URLs for a site. It allows webmasters to include additional information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. This allows search engines to crawl the site more intelligently.