A sitemap is a file which contains the different pages of an Internet site and the route to them through the sections of the website. The webpages can be arranged visually or as plain text and this sort of a file is rather useful for two reasons. The first one is that it makes it a lot easier for the site visitors to locate a certain page they need, so they can navigate your website better and more quickly, which in turn will improve their user experience and it'll be more likely that they will come back to the Internet site or will recommend it to other people. One more reason is the fact that a sitemap enables search engines to index your content better, especially when it is updated, so if users are searching for specific content, it is much more likely that they'll find your website because it will be listed higher in their search results. In case your website is not indexed properly, it might not appear for some searches, so even when you have what people want, they will simply not get to the site.