Secure Sockets Layer, or SSL, is a protocol employed to encode the data exchanged between a server and its users. The practical application of using an SSL is to preserve the information that customers submit on your Internet site - a login page, a payment page if you run an Internet store, and so forth. Any data they type in in any box on the website will be submitted securely to the server, so their login or payment data will be protected from being accessed by unauthorized individuals. Typically, an SSL certificate requires a dedicated IP address to be set up, which suggests the overall cost for your presence online will be bigger. While this might not exactly be a problem for a larger business, it may matter for a non-profit organization or a small web store that doesn't generate big profits if additional money should be spent. This is the main reason why we have taken advantage of an extension known as Server Name Indication (SNI) and we've made it possible to use a shared server IP address to install an SSL certificate.