Secure Sockets Layer, or SSL, is a protocol employed to encode the data exchanged between a server and its users. The practical application of using an SSL is to preserve the data which customers submit on your site - a login page, a payment page if you run a web-based store, etc. Any data they type in in any box on the website will be submitted securely to the server, so their login or payment details will be protected from being accessed by unauthorized people. Normally, an SSL certificate requires a dedicated IP address to be set up, which implies the overall cost for your online presence shall be bigger. While this may not be an issue for a larger company, it might matter for a non-profit organization or a small online shop which doesn't generate big profits if additional money should be spent. This is the reason why we have taken advantage of an extension called Server Name Indication (SNI) and we have made it possible to use a shared server IP address to install an SSL certificate.