Secure Sockets Layer, or SSL, is a protocol that is used to encrypt the info exchanged between a hosting server and its users. The practical application of using an SSL is to protect the info which clients submit on your website - a login page, a payment page if you run an online store, and so forth. Any info they enter in any box on the website shall be submitted safely to the server, so their login or payment details shall be protected from being accessed by unauthorized people. Usually, an SSL certificate requires a dedicated IP address to be set up, which means the overall cost for your online presence will be bigger. While this may not be a problem for a larger business, it might matter for a non-profit organization or a small online shop which doesn't generate big profits if additional money should be spent. This is the main reason why we have taken advantage of an extension referred to as Server Name Indication (SNI) and we've made it possible to use a shared server IP address to set up an SSL certificate.