Secure Sockets Layer, or SSL, is a protocol used to encode the data exchanged between a web server and its users. The practical application of using an SSL is to protect the info that site visitors submit on your website - a login page, a payment page if you run a web-based store, and so on. Any info they enter in any box on the website will be submitted securely to the server, so their login or payment details shall be protected from being accessed by unauthorized individuals. Typically, an SSL certificate needs a dedicated IP address to be installed, which implies the overall cost for your online presence shall be bigger. While this might not exactly be a problem for a larger firm, it may matter for a non-profit organization or a small web store which doesn't generate big profits if additional money should be spent. That's the key reason why we have 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 install an SSL certificate.