Customer facilitySD-WAN CPEMicrosoftbackboneInternet Azure regionSD-WAN NVAAzure regionSD-WAN NVAAzure regionCustomer facilitySD-WAN CPECustomer facilityInternet PoPInternet PoPExpressRoutePoPSD-WAN tunnel over internet link Internet link ExpressRoute private peering SD-WAN tunnel over internet link Internet PoPCustomer facilitySD-WAN tunnel over internet link Customer facilityInternet link ExpressRoutePoPRoute ServerRoute ServerRoute ServerExpressRoute gatewayExpressRoute gatewaySD-WAN NVAExpressRoute gatewayExpressRoute private peering High-performance overlay on top of the Microsoft backboneSD-WAN CPE