A sitemap is a file that includes the different pages of an Internet site and the route to them through the sections of the site. The web pages can be sorted visually or as plain text and this type of a file is very useful for 2 reasons. The first one is that it makes it faster and easier for the website visitors to find a particular page they need, so that 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 return to the site or will recommend it to other people. Another reason is the fact that a sitemap permits search engines to index your website content better, especially if it is updated, so if users are interested in certain content, it's much more likely that they will come across your Internet site since it will be listed higher in their search results. If your site is not indexed effectively, it might not show up for some searches, so even in case you have what people want, they will simply not get to your Internet site.