The "domain join" is misleading. It does not really join the domain, it just creates local account. Joining domain has to be done manually after installation. (Otherwise, network connection is a logical requirement for for domain join, you need to contact DC after all.)
This is in a stark contrast with current linux desktop distributions, which do allow domain join straight from their OOBE.
This is in a stark contrast with current linux desktop distributions, which do allow domain join straight from their OOBE.