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 employing an SSL is to secure the data that site visitors submit on your website - a login page, a payment page if you run an Internet store, etc. Any data they input in any box on the Internet site shall be submitted safely and securely to the server, so their login or payment details shall be protected from being accessed by unauthorized individuals. In general, an SSL certificate requires a dedicated IP address to be installed, which means the overall cost for your online presence will be higher. While this may not be an issue for a larger company, it may matter for a non-profit organization or a small online shop that doesn't generate big income if additional money should be spent. That is the main reason why we have taken advantage of an extension called Server Name Indication (SNI) and we have made it possible to use a shared server IP address to set up an SSL certificate.