Secure Sockets Layer, or SSL, is a protocol used to encode the information exchanged between a server and its users. The practical application of using an SSL is to protect the data which clients submit on your site - a login page, a payment page if you run an online store, etc. Any info they input in any box on the Internet site will be submitted safely and securely to the server, so their login or payment information will be protected from being accessed by unauthorized people. In general, an SSL certificate needs a dedicated IP address to be installed, which suggests the overall cost for your web presence will be higher. While this might not be a problem for a larger business, it might matter for a non-profit organization or a small online shop that does not generate big profits if additional money should be spent. This is the main reason why we've taken advantage of an extension referred to as Server Name Indication (SNI) and we have made it possible to use a shared server IP address to set up an SSL certificate.