Azure ExpressRoute

Use Azure ExpressRoute to create private connections between Azure datacenters and infrastructure on premises or in a colocation environment. ExpressRoute connections don't route through the public internet, and they offer more reliability, faster speed, and lower latency than typical internet connections. In some cases, using ExpressRoute connections to transfer data between on-premises systems and Azure can provide cost benefits.

Azure ExpressRoute is used to create private connections between Azure datacenters and infrastructure on premises or in a colocation environment. ExpressRoute connections don't route through the public internet, and, according to Microsoft, it offers more reliability, faster speed, and lower latency than typical internet connections.

ExpressRoute provides a connection to Azure with bandwidths up to 100 Gbps, which makes it an option for scenarios like periodic data migration, replication for business continuity, disaster recovery, and other high-availability strategies.

With high throughput and low latency, Azure ExpressRoute offers a natural extension to or between datacenters, to provide the scale and economics of the public cloud without compromising network performance. It offers high-throughput connections offered by ExpressRoute, build applications that span on-premises infrastructure and Azure with the goal of not compromising privacy or performance. For example, run a corporate intranet application in Azure that authenticates customers with an on-premises Azure Active Directory (Azure AD) service and serves them without routing traffic through the public internet.

All inbound data transfer is free of charge, and all outbound data transfer is charged based on a pre-determined rate. Users are also charged a fixed monthly port fee (based on High Availability dual ports).