Secure Sockets Layer, or SSL, is a protocol employed to encrypt the data exchanged between a web server and its users. The practical application of employing an SSL is to protect the information which visitors submit on your site - a login page, a payment page if you run an Internet store, etc. Any information they enter in any box on the website shall be submitted safely to the server, so their login or payment details will be protected from being accessed by unauthorized people. In general, an SSL certificate needs a dedicated IP address to be set up, which means the overall cost for your online presence will be higher. While this might not be a problem for a larger enterprise, it might matter for a non-profit organization or a small online shop which doesn't generate big revenue if additional money should be spent. That's the reason why we have taken advantage of an extension referred to as Server Name Indication (SNI) and we've made it possible to use a shared server IP address to install an SSL certificate.