It is probably an ELB that fronts multiple VMs that they cycle through. Also, that is only their website. I'm sure they have more infrastructure than just the V

It is probably an ELB that fronts multiple VMs that they cycle through. Also, that is only their website. I'm sure they have more infrastructure than just the VMs that host their web app. It is quite easy to have a single unchanging IP address and constantly rotating instances behind it.