All devices on the World Wide Web are recognized by a special number called an IP address, such as 188.8.131.52. In case you have a website, the domain name that you enter to open it is for your convenience, however the server where your site files are still has an IP address. Due to the fact that there're many more sites and devices than there're IP addresses, all the shared web hosting servers have a number of websites under an identical IP, whereas using a dedicated server you'll get a dedicated IP too. Even in the first case though, you're able to obtain a dedicated IP for your websites and host them on a shared server. One benefit would be that you will get better search engine rankings as a dedicated IP generally means a faster loading website. What's more, you need such an IP in case you want to obtain an SSL certificate for your site and secure the information that visitors submit on it.