You have on-premises networks connected to an Azure Virtual WAN (VWAN1) and VNet1. VWAN1 is in a full-mesh with the on-premises sites and VNet1. The virtual hub routing preference for VWAN1 is AS Path. To route traffic from VNet1 to 10.61.1.5, which path will the traffic take?

The correct path is the ExpressRoute connection to Branch3. Azure Virtual WAN routing preference for AS Path prioritizes paths with shorter AS Path lengths. If AS Path lengths are equal, it then prefers ExpressRoute over VPN. In this scenario, Branch3 has an ExpressRoute connection, which is generally preferred over VPN for equal AS Path lengths. Branch1 and Branch2 use VPN, making them less preferred than ExpressRoute. Branch2 also has an ExpressRoute connection, but without specific AS Path length information, Branch3's ExpressRoute is the most likely preferred path given the general preference for ExpressRoute.