The IP address (Internet Protocol Address) is the non-text (numerical) way of showing the address of a website. An example of this is 184.108.40.206. A shared IP address uses the same numbers for multiple websites while a dedicated IP Address is the only website using that same number. In the past, you used to have a dedicated IP address to have an SSL Certificate but that is no longer true. While having a dedicated or shared IP address does not directly help you rank a dedicated IP address does increase page loading time which in itself is a factor for ranking in the search engines.