Let’s say we want to move our 1clickmigration.com from our current hosting profider to another and test it before going live while suffering no downtime (or minimum)
One way to go about it is to setup www.1clickmigration.com on the new host while keeping the main site on the old one. I can then migrate and test. If everything goes well I can then move 1clickmigration.com to the new host as well and point to the same install as www.1clickmigration.com. All this is done via DNS configuration. We use CloudFlare DNS and here is how this would look like.