I'm changing server accounts. My company has a domain name hosted with GoDaddy, let's call it
www.example.com. This hosting account is a shared hosting account. They also have another domain name within it (sub-domain?) that ONLY handles registration. It doesn't even have a front-end, just PHP and mySQL. Let's call that domain -
My company purchased a VPS account from GoDaddy and wants me to move ONLY the
registration.example.com domain over to the VPS for better performance, security, etc.
I copied the content over, but now my main questions are - How do I transfer the domain to use this new VPS without any downtime? Do I just change the nameservers? Is there a safe way to test this? Can I fallback instantly in case it doesn't work as intended?