ExpressRoute
A private, dedicated connection between on-premises and Azure that bypasses the public internet.
ExpressRoute establishes a private, dedicated circuit between an on-premises network and Microsoft’s cloud through a connectivity provider, so traffic never traverses the public internet. This delivers more predictable latency, higher bandwidth options, and greater isolation than any internet-based connection, making it the preferred choice for regulated industries or workloads with strict performance requirements. The key exam distinction is ExpressRoute versus VPN Gateway: both connect on-premises to Azure, but VPN Gateway encrypts traffic over the public internet while ExpressRoute uses a private, provider-managed circuit. ExpressRoute also reaches Microsoft 365 and other Microsoft cloud services, not just Azure.
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