When deploying Azure Virtual Desktop, which solutions can facilitate session hosts' communication with on-premises resources?

Using ExpressRoute is a robust solution that facilitates secure and reliable communication between Azure Virtual Desktop session hosts and on-premises resources. ExpressRoute establishes a private connection from your on-premises network directly to Azure, bypassing the public internet. This connection not only enhances the security of the data being transmitted but also provides better reliability, lower latency, and improved bandwidth compared to standard internet connections. This is particularly important for enterprise applications and sensitive data, making it an ideal choice for organizations that require consistent, high-performance connectivity to their on-premises networks from Azure Virtual Desktop.

While other options such as virtual network peering, Azure Bastion, and RDP Shortpath can also assist in various ways, they serve different purposes. Virtual network peering allows for the indirect communication between virtual networks within Azure, while Azure Bastion provides secure and seamless RDP and SSH connectivity to VMs in the Azure portal, without the need for a public IP. RDP Shortpath enhances the RDP experience by optimizing the connection path but does not establish a direct link to on-prem resources. Thus, ExpressRoute stands out as the most relevant solution for establishing reliable communication between Azure and on-premises environments.