There are three types of SSL Certificates:
- Domain Validation (DV)
- Organization Validation (OV)
- Extended Validation (EV)
The main difference lies in how much effort is needed to get validated to obtain the SSL Certificate.
For Domain Validation, very few checks are done and essentially anyone with a domain can get this type of SSL Certificate. This makes DV Certificates very easy to obtain and can generally be installed in a matter of minutes. If you need SSL fast, then this is probably the route to go. You will still get the benefits of an encrypted connection, but people who look at the details of your SSL Certificate might notice it is Domain Validated and therefore easier to obtain and ultimately less trustworthy.
Organization Validation does more advanced checks before issuing the certificate and also shows more verified information when viewing the certificate. OV SSL Certificates, therefore, offer a greater deal of trust and will take slightly longer to obtain.
Extended Validation is the most time-consuming SSL Certificate to obtain. The company applying is thoroughly verified and supporting documents will be required to complete the sign-up process. EV SSL Certificates, therefore, offers the greatest level of trust.