A `sitemap.xml` file is an XML file that helps search engines understand the structure of your website. It lists the pages of your site to ensure that search engines can crawl it effectively. Here are some key points about `sitemap.xml`:
Purpose: To inform search engines about the pages available for crawling.
Format: Written in XML format, following specific syntax rules.
Elements:
urlset: The root element that contains all the URLs.
url: Each URL entry within the sitemap.
loc: The location of the URL.
lastmod: The last modified date of the URL (optional).
changefreq: How frequently the page is likely to change (optional).
priority: The priority of the page relative to other pages (optional).