We are building a migration factory for a bigger on-premises to GCP cloud migration. For that we have a VM platform with Compute Engine VMs. Currently the DC is located on-premises and the VMs are joind into the AD over LDAP. Is there a way to use LDAPs over LDAP or is there a technical need specified by windows implementation?

I want to know if there is a way to join a client into the domain in a completely secure way.