CmdID / az / az network / az network dns / az network dns record-set / az network dns record-set caa
az network dns record-set caa add-record
Add a CAA record. Azure CLI reference
3 options Its page in the Azure CLI reference
Options
--if-none-matchCreate the record set only if it does not already exist.--record-set-name, -nThe name of the record set relative to the zone.--ttlRecord set TTL (time-to-live)