Your company uses Azure Virtual Desktop $($AVD$).$

You need to design a business continuity and disaster recovery $($BCDR$)$ plan for the AVD implementation. The plan must meet the following requirements:

Ensure that a subset of virtual machines remain functional when an update or maintenance task cycles through the host pool.

Ensure that connectivity to resources in a host pool remains functional if a server rack within a datacenter fails.

What should you include in the design?