Returning operations to the primary system after it has been restored. Like moving back home after evacuation when it's safe to return.
After fixing the main server, IT teams performed a controlled failback during low-traffic hours to minimize disruption.
Failback is a disaster recovery (DR) process step, not a single cloud service. All major clouds support failback through combinations of replication, DNS/traffic management, backup/restore, and orchestration tools (e.g., site recovery, load balancing, and runbooks) to move workloads from a secondary environment back to the primary after it’s restored.