Instant VM Recovery is the quickest way to get an entire VM up and running from a backup stored in the backup repository. In fact, it doesn't really restore the VM at all; it starts it directly from the backup repository!

Since the recovered VM runs directly from the backup repository, no data is transferred to the vSphere hosts or datastores during the recovery process. The storage is served from the backup repository and other resources, such as CPU, memory, and network, are utilized from the production ESXi hosts. This ensures quick recovery and nearly instant accessibility. Veeam Backup & Replication even lets you migrate to production once the VM has been made accessible to ensure that VMs don't continue running from the temporary location used during Instant VM Recovery. This is basically a standard vSphere Storage vMotion, but it is performed from within the Veeam Backup & Replication interface so that you don't have to change management tools...