You have an Azure Virtual Desktop deployment in East US and a disaster recovery location in West US. You must perform controlled failover/failback tests every six months while minimizing administrative effort and cost. Which disaster recovery approach do you recommend?

An active-passive disaster recovery solution is recommended because it balances the need for controlled failover/failback tests with minimizing administrative effort and cost. In an active-passive setup, the disaster recovery site (West US) is kept in a warm or cold state, meaning resources are not fully provisioned or running at all times, reducing ongoing costs. When a test or actual failover is needed, the passive site is activated. This approach allows for controlled testing without the complexity and higher cost of maintaining two fully active environments. An active-active solution would incur significantly higher costs due to running full infrastructure in both regions continuously, which is not aligned with minimizing cost. Backing up the deployment with Azure Backup or an Azure Backup vault is a crucial component of any disaster recovery strategy, but it is a data protection mechanism, not a complete disaster recovery approach for the entire Azure Virtual Desktop deployment, which includes compute, networking, and user profiles. While backups are necessary, they don't define the failover strategy itself.