The main difference between Premium Extended Validation (EV) and Deluxe SSL certificates is the vetting process that must be completed in order for the Certification Authority (CA) to issue a signed certificate to the requestor. Additionally, websites secured with Premium Extended Validation (EV) certificates will be displayed differently in modern browsers, highlighting a portion of the address bar in green.
More comprehensive than the Deluxe vetting process, the Premium Extended Validation (EV) vetting process validates the requestor's domain control and verifies the requesting entity's legal existence and identity. The process authenticates the following information pertaining to the certificate-requesting organization: