To enable autoscaling in an Azure Virtual Desktop infrastructure, which resource needs to be modified?

To enable autoscaling in an Azure Virtual Desktop infrastructure, the primary resource that needs to be modified is the virtual desktop pool itself, which is often referred to as Pool1 in the context of this question.

The virtual desktop pool is responsible for managing the sessions and resources allocated to users. When introducing autoscaling, you configure settings related to the number of session hosts that should be added or removed based on user demand or predefined conditions. By modifying the pool, you can define parameters such as the minimum and maximum number of virtual machines (VMs) that should be running at any given time, along with the thresholds for adding or removing these VMs based on active user sessions.

Understanding this relationship is crucial for managing resources efficiently within Azure Virtual Desktop, as it directly impacts user experience and the cost associated with running virtual desktops. Adjusting the pool ensures that as user demand fluctuates, the infrastructure can scale appropriately to meet those needs while optimizing performance and cost.

The other options mentioned involve resources that do not directly handle the autoscaling capability within the Azure Virtual Desktop environment.