Azure Site Recovery
Azure Site Recovery helps ensure business continuity by keeping business apps and workloads running during outages.
Site Recovery replicates workloads running on physical and virtual machines (VMs) from a primary site to a secondary location. When an outage occurs at your primary site, you fail over to secondary location and access apps from there.
After the primary location is running again, you can fail back to it. This keeps your business moving while things are down.