A sitemap is a file that includes the different pages of a website and the path to them through the sections of the Internet site. The webpages can be sorted visually or as plain text and this kind of a file is rather useful for 2 reasons. The first one is that it makes it faster and easier for the website visitors to discover a specific page they need, so that they can navigate your website better and quicker, that in turn will increase their user experience and it will be more likely that they will revisit the website or will recommend it to other people. The second reason is that a sitemap makes it possible for search engines to index your site content better, especially if it's updated, so when users are looking for specific content, it's much more likely that they will come across your Internet site because it will be listed higher in their search engine results. If your site is not indexed effectively, it may not show up for some searches, so even in case you have what people need, they will simply not get to your website.