Secure Sockets Layer, or SSL, is a protocol employed to encrypt the info exchanged between a server and its users. The practical application of employing an SSL is to preserve the info which customers submit on your website - a login page, a payment page if you run an online store, etc. Any information they type in in any box on the Internet site shall be submitted safely and securely to the server, so their login or payment data will be protected from being accessed by unauthorized people. Normally, an SSL certificate needs a dedicated IP address to be set up, which implies the overall cost for your online presence shall be bigger. While this might not be an issue for a larger company, it may matter for a non-profit organization or a small web store that doesn't generate big revenue 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've made it possible to use a shared server IP address to install an SSL certificate.