How to setup domain masking for external domains?
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?