Direct Quote From GoDaddy™ - A Domain Validated (DV) Certificate verifies your ownership of the domain, while the Organization Validated (OV) Certificate proves that you own the domain and that your organization is legitimate. This is reassuring to your site visitors, as a fraudulent website would never pass these checks. The Extended Validated (EV) SSL offers the highest level of assurance to your customers – EV SSL applicants must pass an extensive vetting process. EV SSL turns browser bar green.
SSL Certificate is a system applied to a website that provides security to visitors. Traditionally, this feature was exclusively applied to pages where sensitive information was entered, like a credit card. With the surge of cyber crimes, hackers target everyone. Companies like Google responded to this epidemic by encouraging SSL Certificates on all websites. As such, Google boosts the ranking of a website that applies this certificate.