Your ExpressRoute circuit isn't the bottleneck. Your gateway is. What the Azure ExpressRoute gateway does, how it probably works inside, and the limits that matter for private endpoints and FastPath. Audience: engineers who design or operate Azure networking over ExpressRoute. You should already know VNets, BGP basics, and what a private endpoint is. Reading time: about 20 minutes. TL;DR Your end-to-end throughput is the smaller of the circuit and the gateway ...