The XML sitemap file is essentially your website’s navigation map. It provides search engines with a clear overview of your site’s structure, making it easier to index. When a crawler explores your site for SEO, the sitemap gives it valuable information about the content to discover and display in search results. It also lists all the links on your site. While having an XML sitemap doesn’t guarantee that every page will be crawled or indexed, it significantly improves your chances of ranking well by helping crawlers better understand your site.