For an Azure Virtual Desktop infrastructure to communicate with resources in an on-premises network, which two connectivity solutions can be recommended?

In an Azure Virtual Desktop infrastructure, establishing connectivity with on-premises resources is critical for ensuring seamless access and enhanced performance. The inclusion of ExpressRoute makes it an excellent choice because it provides a dedicated, private connection from your on-premises network directly to Azure. This means that the data travels through a private circuit rather than the public internet, which results in lower latency, increased reliability, and added security for the data in transit. This is particularly advantageous for scenarios that require high-bandwidth connections or for regulatory compliance where data privacy is a consideration.

Moreover, ExpressRoute helps in avoiding the uncertainties and performance issues often associated with internet-based connections, which makes it highly suitable for enterprises looking to integrate their on-premises resources with Azure Virtual Desktop.

While choices like Site-to-Site (S2S) VPN are also viable for connecting on-premises networks to Azure, they typically use the public internet and might not offer the same level of reliability and performance as ExpressRoute. Other options like RDP Shortpath and Virtual network peering serve different functions and are not designed specifically for direct on-premises connectivity, which further highlights the appropriateness of ExpressRoute in this context.