HTTP (Hyper Text Transfer Protocol) and HTTPS (Hypertext Transfer Protocol Secure) are rules on what communication means to use when viewing the homepage.
Google announces that “always-on SSL” will affect SEO measures.
In 2014, The fact that Google mentioned using HTTPS as a ranking signal as mentioned below made it clear that it would be given preferential treatment at SEO.
SSL is an abbreviation for Secure Sockets Layer, it keeps the Internet connection secure, protects all confidential information transmitted between the two systems.
The SSL certificate is installed on the server side, but it is visually displayed on the browser so that the user can be told that it is protected by SSL.
The issued SSL server certificate is installed on the Web server or mail server.