Data Transmission Service:Connect your on-premises networks to Alibaba Cloud

You can use VPN Gateway to create a VPN over IPsec tunnel between your VPCs and on-premises facilities. VPN Gateway runs on servers with primary/secondary redundancy. If the primary server fails, the tunneling workloads are switched over to a secondary server within seconds.

VPN tunnels are based on Internet communications. The transmission performance of a VPN tunnel depends on the Internet speed. Therefore, VPN Gateway is an ideal option for latency-insensitive tasks.

For more information, see Connect a data center to a VPC.

You can connect your on-premises networks to Alibaba Cloud access points over a leased line provided by a third-party service provider. You can apply for a circuit in the Express Connect console.

An Express Connect circuit provides fast and stable connectivity between your on-premises network and Alibaba Cloud networks. Therefore, Express Connect is an ideal option for latency-sensitive tasks.

For more information about how to deploy Express Connect circuits, see Overview of access solutions.

You can use redundant Express Connect circuits to connect your on-premises networks into Alibaba Cloud VPCs. You can provision up to four Express Connect circuits that work in equal-cost multi-path routing (ECMP) mode.

For more information, see Establish active/standby connections between a data center and Alibaba Cloud and Establish active/active connections between a data center and Alibaba Cloud.

Smart Access Gateway provides an easy-to-deploy but highly secure connection between your on-premises networks and Alibaba Cloud VPCs. You can establish an encrypted connection to the nearest VPC based on Internet communications. Smart Access Gateway is an ideal option for connecting multiple branch sites into Alibaba Cloud with affordable costs and minimal deployment efforts.

For more information, see Connect private networks outside the Chinese mainland to Alibaba Cloud