You have an Azure Virtual Desktop deployment in the East US Azure region and a disaster recovery location in the West US Azure region. You need to recommend a disaster recovery solution that meets…

An active-active disaster recovery solution typically involves running resources in both regions simultaneously, which increases costs and administrative complexity, contrary to the 'minimized costs and administrative effort' requirement.

Backing up the Azure Virtual Desktop deployment with Azure Backup is for data protection (like session host disks), but it does not constitute a complete disaster recovery *solution* for the entire AVD control plane and user access across regions.

An active-passive disaster recovery solution involves maintaining a standby deployment in the DR region that can be activated when needed. This approach minimizes ongoing costs and administrative effort compared to active-active, while still allowing for planned failover/failback testing.

Backing up to an Azure Backup vault is a component of data protection, not a comprehensive disaster recovery strategy for an entire AVD deployment, which requires deployment of resources in a secondary region.