Sitemap is a Platform where you can upload webpages of your website !!! which also helps in the crawling.
Regards
Gaurav Malhotra

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.

A sitemap is normally known as a file of the XML type which has the function of listing the URLs for any site. The sitemap allows the webmaster to add further information about the URL such as the last updates, the changes in the URLs and how often it is made, and also the importance of the URL in relation to the others. Sitemaps can prove to be beneficial in certain situations such as the inability of the user to access every area of a particular website through the interface of a browser.

A sitemap is also known as a page that contains links to all the pages on that site. It is a sitemap that is placed in an important position so that users can easily see it and see how the web is structured.