If the host running the VM fails (or is failing), it will move the VM to another host. You can also create a copy of the VM, store it in another Azure data cent

If the host running the VM fails (or is failing), it will move the VM to another host. You can also create a copy of the VM, store it in another Azure data centre region. Spin up only if the other one goes down. You could even script it as there is a REST API.