The only difference I'd make here is using rsync for the transfer of the dump. If you're migrating a large database, frequently MySQL in my experience, you can

The only difference I'd make here is using rsync for the transfer of the dump. If you're migrating a large database, frequently MySQL in my experience, you can run rsync in advance. With rsync you can cut the downtime between disabling the old-host and promoting the new-host to the time it takes the transfer the changes applied since your previous rsync. For small hosts/data-sets this might not matter, but for large ones you'll get a real saving.