Section 01: What is an SSL certificate?...
Section 02: What's the difference between a DV, OV, and an EV?...
Basic DV SSL is a "domain verified" certificate, which offers the most affordable or economical and quick way to implement SSL to your website; and the "domain validated" certificate does NOT any additional organization-level validation. (Ideal for personal websites, blogs, and social media, or any site that does not transmit any private or confidential information).
Organization Validation (OV SSL) certificates, provides instant identity confirmation and strong SSL protection for your website and business. OV SSL is an "organization validated" certificate that gives your website a step-up in credibility over domain validated SSL certificates, and activates the 'browser padlock' and https; which confirms corporate identity and assures your customers that you take security very seriously. Additionally, site visitors may verify that the website is operated by a legitimate company and is not an imposter site.
Extended Validation (EV SSL) certificates, are the most secure with the highest class of SSL available today, and gives more creditability and trust