Domain Validation (DV) is the lowest level of validation, and verifies that whoever requests the certificate controls the domain that it protects.
Organization Validation (OV) verifies the identity of the organization (e.g. a business, nonprofit, or government organization) of the certificate applicant.
Extended Validation (EV) like OV, verifies the identity of an organization. However, EV represents a higher standard of trust than OV and requires more rigorous validation checks to meet the standard of the CA/Browser Forum’s Extend.
