HTTP, or hypertext transfer protocol, is the way a Web server communicates with browsers like Internet Explorer® and Mozilla Firefox®. HTTP lets visitors view a site and send information back to the Web server.
HTTPS, hypertext transfer protocol secure, is HTTP through a secured connection. Communications through an HTTPS server are encrypted by a secure certificate known as an SSL. The encryption prevents third-parties from eavesdropping on communications to and from the server.
An SSL certificate keeps you and your customers safe by protecting the information that’s flowing to and from your website. It encrypts names, addresses, passwords, account and credit card numbers and more so hackers and other online criminals can’t read them.