What is SSL?
Secure Sockets Layer (SSL) is a standard security technology for accepting an encrypted link between a server and a client, typically a website and a browser, or a mail server and a mail client ie. Outlook.
Moreover, SSL is a security protocol. Protocols describe how algorithms should be used. In this case, the SSL protocol determines variables of the encryption for both the link and the data being transmitted.
How it works
All browsers have the ability to interact with secured web servers using the SSL protocol. However, the browser and the server need what is called an SSL Certificate to be able to initiate establish a secure connection.
SSL secures millions of people’s data on the Internet daily, especially during online transactions or when transmitting confidential information. Internet users have come to associate their online security with the lock icon that comes with an SSL-secured website or green address bar that comes with an Extended Validation SSL-secured website. SSL-secured websites also begin with https rather than http.