Secure Sockets Layer, or SSL, is a protocol used to encrypt the info exchanged between a web server and its users. The practical application of using an SSL is to secure the info which clients submit on your site - a login page, a payment page if you run an Internet store, etc. Any content they type in in any box on the Internet site shall be submitted securely to the server, so their login or payment details will be protected from being accessed by unauthorized people. Usually, an SSL certificate requires a dedicated IP address to be installed, which implies the overall cost for your web presence shall be higher. While this might not be a problem for a larger business, it may matter for a non-profit organization or a small online shop that doesn't generate big profits 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 set up an SSL certificate.