Security
DCV
Abbreviation for Domain Control Validation
In short and in plain language
DCV is a check before a certificate is issued.
The issuer makes sure that someone really controls a domain. Only then can the domain get a certificate.
The check works, for example, with a file on the site. Or it uses a record for the domain.
Definition
DCV is the check by which a certificate authority establishes that an applicant actually controls a domain. It is a prerequisite for issuing a certificate for that domain. The check runs, for example, via a file on the website or a DNS record.