You can use VPN Gateway, Express Connect, or Smart Access Gateway to connect your local Internet data center (IDC) and a virtual private cloud (VPC) to build a hybrid cloud.
You can establish private connections between your local IDC and an Alibaba Cloud VPC to build a hybrid cloud. Then you can connect your local IT infrastructure to Alibaba Cloud and use the massive amounts of computing, storage, network, and CDN resources provided by Alibaba Cloud to handle fluctuating workloads and improve application stability.
You can connect local IDCs to your VPCs by using VPN Gateway, Express Connect, or Smart Access Gateway. You can also use Cloud Enterprise Network (CEN) to connect to your network resources around the world.
|VPN Gateway||You can use VPN Gateway to create VPN over IPsec to establish connections between
your VPCs and local IDCs. The hot-standby architecture of VPN Gateway ensures automatic
failover within a few seconds.
VPN connections are established over the Internet. The latency and availability of your VPN connections depend on the speed and quality of the Internet. If you do not have high requirements on network latency, we recommend that you use VPN Gateway.
For more information, see Establish a connection between a VPC and an on-premises data center.
You can connect your local IDCs to Alibaba Cloud access points by using dedicated circuits leased from a third-party service provider. You can apply in the Express Connect console for establishing connections between your local IDCs and Alibaba Cloud access points.
An Express Connect circuit ensures high-quality and high-bandwidth network connections. If you require a high-quality network connection, we recommend that you use an Express Connect circuit.
For more information about how to deploy Express Connect circuits, see Overview of access solutions.
|Redundant Express Connect circuits||You can use redundant Express Connect circuits to establish high-quality and reliable
private connections between your local IDCs and Alibaba Cloud VPCs. You can use up
to four Express Connect circuits to achieve equal-cost multi-path routing (ECMP).
For more information, see Create active/standby physical connections and Create redundant connections with load-balancing routing.
|Smart Access Gateway||Smart Access Gateway provides an end-to-end cloud deployment solution. Smart Access Gateway allows enterprises
to connect to the nearest VPCs through encrypted connections over the Internet, and
enables intelligent, reliable, and secure business system deployment on the cloud.
This service is easy to use and cost-effective. If you need to connect multiple local branch sites to Alibaba Cloud, we recommend that you use Smart Access Gateway.
|Express Connect circuit backup||After you have connected your local IDC to Alibaba Cloud, you can use Smart Access Gateway to establish another connection as a backup to the existing connection. This ensures the high availability of your hybrid cloud.|