This topic describes the regions and zones in which Application Load Balancer (ALB) is available.
Regions and zones
Regions are geolocations of data centers. After you create a cloud resource, you cannot change the region in which the cloud resource is deployed. Each region has multiple isolated locations known as zones. Each zone has its own independent power supply and network.
Zones within the same region can communicate with each other over an internal network. Fault isolation can be enabled between zones. This way, if faults occur in a zone, other zones are not affected and continue to run as expected. Regions are independent of each other. Zones are isolated from each other. The network latency between zones within the same region is low.
To provide more stable and reliable load balancing services, ALB distributes requests across multiple zones and supports real-time disaster recovery. If one zone is down, ALB distributes requests to other zones.
Regions and zones in which ALB is available
The regions and zones in which ALB is available in the following table are for reference only. The information on the buy page shall prevail.
Regions and zones that support instances on the Alibaba Cloud public cloud
Area | Region | Zone |
China | China (Hangzhou) | Zone G, Zone H, Zone I, Zone J, and Zone K |
China (Shanghai) | Zone B, Zone D, Zone E, Zone F, Zone G, Zone L, Zone M, and Zone N | |
China (Shenzhen) | Zone C, Zone D, Zone E, and Zone F | |
China (Chengdu) | Zone A and Zone B | |
China (Qingdao) | Zone B and Zone C | |
China (Beijing) region | Zone F, Zone G, Zone H, Zone I, Zone J, Zone K, and Zone L | |
China (Zhangjiakou) | Zone A, Zone B, and Zone C | |
China (Ulanqab) | Zone A and Zone B | |
China (Hong Kong) | Zone B, Zone C, and Zone D | |
China (Guangzhou) | Zone A and Zone B | |
China (Heyuan) | Zone A and Zone B | |
Asia Pacific | Singapore | Zone A, Zone B, and Zone C |
Malaysia (Kuala Lumpur) | Zone A and Zone B | |
Japan (Tokyo) | Zone A, Zone B, and Zone C | |
Indonesia (Jakarta) | Zone A, Zone B, and Zone C | |
South Korea (Seoul) | Zone A | |
Philippines (Manila) | Zone A | |
Thailand (Bangkok) | Zone A | |
Europe & Americas | UK (London) | Zone A and Zone B |
Germany (Frankfurt) | Zone A, Zone B, and Zone C | |
US (Virginia) | Zone A and Zone B | |
US (Silicon Valley) | Zone A and Zone B | |
Middle East | SAU (Riyadh - Partner Region) | Zone A and Zone B |
Regions in which ALB features are supported
Regions in which dual-stack ALB instances are available
Area | Region |
China | China (Hangzhou), China (Shanghai), China (Shenzhen), China (Chengdu), China (Qingdao), China (Beijing), China (Zhangjiakou), China (Ulanqab), China (Hong Kong), China (Guangzhou), and China (Heyuan) |
Asia Pacific | Singapore |
Europe and Americas | Germany (Frankfurt), US (Virginia), UK (London), and US (Silicon Valley) |
Middle East | SAU (Riyadh - Partner Region) |
For more information, see IP versions.
Regions in which WAF-enabled ALB instances are available
Area | Region |
China | China (Chengdu), China (Qingdao), China (Beijing), China (Guangzhou), China (Hangzhou), China (Ulanqab), China (Shanghai), China (Shenzhen), China (Zhangjiakou), and China (Hong Kong) |
Asia Pacific | Philippines (Manila), Indonesia (Jakarta), Japan (Tokyo), Malaysia (Kuala Lumpur), Singapore, and Thailand (Bangkok) |
Europe and Americas | Germany (Frankfurt), US (Silicon Valley), and US (Virginia) |
Middle East | SAU (Riyadh - Partner Region) |
For more information, see Activate and manage WAF-enabled ALB instances.
Regions in which you can associate Anycast EIPs with ALB instances
Area | Region |
China | China (Hong Kong) |
Asia Pacific | South Korea (Seoul), Japan (Tokyo), Singapore, Malaysia (Kuala Lumpur), Indonesia (Jakarta), Philippines (Manila), and Thailand (Bangkok) |
Europe and Americas | UK (London), US (Virginia), US (Silicon Valley), and Germany (Frankfurt) |
For more information, see Associate Anycast EIPs with an ALB instance to enable access through the nearest access point.
Regions in which you can add Elastic Compute Service (ECS) instances to an ALB instance across regions
Area | Region |
China | China (Chengdu), China (Qingdao), China (Beijing), China (Guangzhou), China (Hangzhou), China (Ulanqab), China (Shanghai), China (Shenzhen), China (Zhangjiakou), and China (Hong Kong) |
Asia Pacific | Indonesia (Jakarta), Japan (Tokyo), Malaysia (Kuala Lumpur), and Singapore |
Europe & Americas | Germany (Frankfurt), UK (London), US (Virginia), and US (Silicon Valley) |
For more information, see Specify an ECS instance in a VPC as a backend server of ALB in a different region.
Regions in which Managed Service for OpenTelemetry is supported by ALB
Area | Region |
China | China (Hangzhou), China (Shanghai), China (Shenzhen), China (Chengdu), China (Qingdao), China (Beijing), China (Zhangjiakou), China (Ulanqab), China (Hong Kong), China (Guangzhou), and China (Heyuan) |
Asia Pacific | Singapore, Malaysia (Kuala Lumpur), Japan (Tokyo), and Indonesia (Jakarta) |
Europe & Americas | UK (London), Germany (Frankfurt), US (Virginia), and US (Silicon Valley) |
For more information, see Enable Managed Service for OpenTelemetry for ALB.
References
DescribeRegions: queries the most recent region list.
DescribeZones: queries zones in a region.