Express Connect enables reliable, secure, and high-speed communication between on-premises data centers and VPCs. You can use Express Connect in the following scenarios to facilitate communication in different network architectures.

Scenario 1: Implement disaster recovery for large and medium-sized enterprises

You can establish multiple physical connections between different access points and a VPC to ensure high availability for your services. This prevents service downtime caused by severed fiber cables, device faults, or access point malfunctions.

You can use an exclusive physical connection of Alibaba Cloud or use a shared physical connection of an Alibaba Cloud partner in this scenario.

Scenario 2: Build scalable and high-availability architectures for large enterprises

When you deploy services on the cloud to provide better support for fast-growing workloads together with on-premises solutions, you can use the equal-cost multi-path routing (ECMP) feature of Express Connect to offer substantial increases in bandwidth that handles terabytes of data. This prevents service downtime caused by device faults, leased line failures, or access point malfunctions.

You can only use an exclusive physical connection of Alibaba Cloud in this scenario.

Scenario 3: Establish a basic network architecture for non-critical services

For services that do not require scalability or high availability, such as running tests in a testing environment on the cloud, we recommend that you use Express Connect to directly connect your data center to Alibaba Cloud. This ensures security and reliability of communication between your data center and Alibaba Cloud.

You can use an exclusive physical connection of Alibaba Cloud or use a shared physical connection of an Alibaba Cloud partner in this scenario.