Secure Sockets Layer, or SSL, is a protocol that is used to encrypt the info exchanged between a web server and its users. The practical application of using an SSL is to secure the data which site visitors 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 will be submitted safely to the server, so their login or payment data shall be protected from being accessed by unauthorized individuals. Usually, an SSL certificate requires a dedicated IP address to be installed, which means the overall cost for your presence online shall be higher. While this might not exactly be an issue for a larger company, it may matter for a non-profit organization or a small online store which doesn't generate big income if additional money should be spent. This is the main reason why we've taken advantage of an extension known as Server Name Indication (SNI) and we have made it possible to use a shared server IP address to install an SSL certificate.