I have 2 domains registered under Google domains, call them olddomain.com & newdomain.com. By the names you might have guessed we are going through a rebranding. Right now, droplets, certs, etc are all setup for olddomain.com. While we wait on cert for newdomain.com we’d like to setup some sort of redirect/masking so if anyone goes to olddomain.com the cert there works but URL appears as newdomain.com. What is the process to accomplish this?

Am I over complicating it with masking & is it as easy as changing the CNAME to newdomain.com then setting up Google domains to point to DO name servers?

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You will need to handle the redirection at the http server level because that’s where you get to know which site the user wanted to browse and thus where you redirect them to.

You will also need to adjust DNS so users are sent to the new server.