HTTPS – SEO WIKI
HTTPS is an extension of the HTTP protocol that was developed in 1994 by Netscape Communications. The HTTP protocol sets the rules for the exchange of information, and is also a transport for data transfer – it is with its help that the browser downloads the contents of the resource to your PC.
HTTPS works through encrypted transport mechanisms, is actively used on the Internet and is supported by all popular browsers. Only one HTTPS site can work on a single IP address. To work with multiple HTTPS sites, a TLS extension called SNI is used.