What is an SSL certificate?
SSL (Secure Sockets Layer) is a type of digital certificate that provides authentication for a website and ensures that information transferred between the site and the user's web browser is encrypted.
When a site is equipped with an SSL certificate, the user's web browser will show a lock icon in the address bar, and the URL will begin with "https://" as opposed to the standard "http://".
This shows the user that the site is safe and any data transmitted is secure.
This is commonly used on pages that require users to submit sensitive information such as passwords, credit card details, or personal information.