A sitemap is a visual or text map of an Internet site - a short list of all pages arranged in sections as they appear on the site. The sitemap is a single file and its presence may have a considerable influence on the popularity of your Internet site, particularly if you have more content. It will allow your site visitors to search the web pages and find what they need much faster, that will raise the chance for them to revisit the Internet site or to show it to friends and colleagues. The sitemap is also essential for search engines to index your content better, which means that some pages will appear in the results for particular searches, which will most likely not happen without a sitemap even if you have the required content. This is especially valid in case you modify some pages since the sitemap tells the search engines that they must crawl the site again to index the new content. Having a sitemap nowadays is fundamental rather than an optional attribute for every thriving site.