This topic describes the regions and zones that support Application Load Balancer (ALB).

Regions and zones

A region is a group of Alibaba Cloud data centers deployed within a geographical location. After you create a resource, you cannot change the region to which the resource belongs. Each region consists of one or more zones with independent power supplies and network infrastructure. If one of the zones in a region is down, the other zones can still serve your workloads. Regions are independent of each other. Zones are isolated from each other. Connections between zones within the same region provide low network latency.

To provide more stable and reliable load balancing services, ALB distributes requests across multiple zones and supports real-time disaster recovery. If one zone fails, ALB distributes requests to other zones.

Regions and zones supported by ALB

Region Zone
China (Hangzhou) Zone H, Zone I, Zone G, Zone J, and Zone K
China (Shanghai) Zone E, Zone F, Zone G, and Zone L
China (Shenzhen) Zone D and Zone E
China (Chengdu) Zone A and Zone B
China (Qingdao) Zone B and Zone C
China (Beijing) Zone H, Zone G, and Zone K
China (Zhangjiakou) Zone A, Zone B, and Zone C
China (Ulanqab) Zone A and Zone B
China (Hong Kong) Zone B and Zone C
China (Guangzhou) Zone A and Zone B
Singapore (Singapore) Zone B and Zone C
Malaysia (Kuala Lumpur) Zone A and Zone B
Australia (Sydney) Zone A and Zone B
India (Mumbai) Zone A and Zone B
Japan (Tokyo) Zone A and Zone B
Indonesia (Jakarta) Zone A and Zone B
Germany (Frankfurt) Zone A and Zone B
US (Virginia) Zone A and Zone B
US (Silicon Valley) Zone A and Zone B

Regions and zones of Alibaba Finance Cloud that support ALB

Region Zone
China (Hangzhou) Zone J and Zone K
China (Shanghai) Zone K and Zone Z
China (Shenzhen) Zone D and Zone E

References