Secure Sockets Layer, or SSL, is a protocol used to encrypt the data exchanged between a hosting server and its users. The practical application of using an SSL is to protect the information which site visitors submit on your site - a login page, a payment page if you run an Internet store, and so forth. Any information they type in in any box on the site shall be submitted safely and securely to the server, so their login or payment details shall 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 presence online shall be bigger. While this might not be a problem for a larger company, it may matter for a non-profit organization or a small online store which doesn't generate big revenue if additional money should be spent. That is the 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.