A sitemap is a visual or text map of a website - an index of all web pages organized in sections as they appear on the site. The sitemap is a single file and its presence may have a crucial influence on the popularity of your Internet site, especially when you have more content. It will enable site visitors to go through the pages and find what they need much faster, which will increase the possibility for them to come back to the site or to share it with friends and colleagues. The sitemap is also essential for search engines to index your site content better, which means that some pages will be in the results for particular searches, which will most likely not happen without a sitemap even when you have the needed website content. This is especially valid when you modify some web pages since the sitemap informs the search engines that they have to crawl the internet site again in order to index the new content. Having a sitemap today is fundamental rather than an optional feature for every thriving website.