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 B, 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, Zone B, Zone C, and Zone D | |
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, Zone C, and Zone D |
Malaysia (Kuala Lumpur) | Zone A, Zone B, and Zone C | |
Japan (Tokyo) | Zone A, Zone B, Zone C, and Zone E | |
Indonesia (Jakarta) | Zone A, Zone B, and Zone C | |
South Korea (Seoul) | Zone A and Zone B | |
Philippines (Manila) | Zone A and Zone B | |
Thailand (Bangkok) | Zone A and Zone B | |
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 | |
Mexico | Zone A | |
Middle East | SAU (Riyadh - Partner Region) | Zone A and Zone B |
UAE (Dubai) | Zone A and Zone B |
The following zones are available for upgraded ALB instances only; non-upgraded instances are not supported:
South Korea (Seoul) Zone B, Malaysia (Kuala Lumpur) Zone C, Thailand (Bangkok) Zone B, Philippines (Manila) Zone B, China (Ulanqab) Zone D, Japan (Tokyo) Zone E, and Singapore Zone D.
Regions in which dual-stack ALB instances are available
Regions and zones that support instances on the Alibaba Cloud public cloud
Area | Region |
China | China (Hangzhou), China (Shanghai), China (Shenzhen), China (Heyuan), China (Chengdu), China (Qingdao), China (Beijing), China (Zhangjiakou), China (Ulanqab), China (Hong Kong), and China (Guangzhou) |
Asia Pacific | Singapore, Malaysia (Kuala Lumpur), Japan (Tokyo), Indonesia (Jakarta), South Korea (Seoul), Philippines (Manila), and Thailand (Bangkok) |
Europe and Americas | UK (London), Germany (Frankfurt), US (Virginia), US (Silicon Valley), and Mexico |
Middle East | SAU (Riyadh - Partner Region) |
For more information, see ALB instances.
Regions in which ALB features are supported
Regions and zones where ALB Extensible Edition is available
Area | Region | Zone |
China | China (Ulanqab) | Zone A, Zone B, and Zone C |
China (Hangzhou) | Zone J and Zone K | |
Asia Pacific | Singapore | Zone A, Zone B, and Zone C |
Europe and Americas | Germany (Frankfurt) | Zone A and Zone B |
The ALB Extensible Edition is in public preview now. Refer to the announcement for more details.
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, Thailand (Bangkok), and South Korea (Seoul) |
Europe and Americas | Germany (Frankfurt), US (Virginia), US (Silicon Valley), and Mexico |
Middle East | SAU (Riyadh - Partner Region) |
For more information, see Enable WAF protection for an ALB instance.
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), Thailand (Bangkok) |
Europe and Americas | UK (London), US (Virginia), US (Silicon Valley), Germany (Frankfurt) |
For more information, see Use an Anycast EIP to provide nearby access for multi-region services.
Regions in which you can add remote IP addresses to an ALB instance
ALB upgraded instances deployed in these regions support adding remote IP addresses as backend servers: Regions and zones in which ALB is available. The regions where non-upgraded ALB instances support this feature are listed below:
Area | Region |
China | China (Chengdu), China (Qingdao), China (Beijing), China (Heyuan), 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 a backend server located in a VPC in a different region for ALB and Add on-premises servers to an ALB instance within the same region.
Regions in which you can add Function Compute to ALB as backend servers
Area | Region |
China | China (Hangzhou), China (Shanghai), China (Shenzhen), China (Chengdu), China (Qingdao), China (Beijing), China (Zhangjiakou), China (Hong Kong), and China (Ulanqab) |
Asia Pacific | Singapore, Malaysia (Kuala Lumpur), Japan (Tokyo), Indonesia (Jakarta), South Korea (Seoul), and Thailand (Bangkok) |
Europe & Americas | Germany (Frankfurt), US (Virginia), US (Silicon Valley), and UK (London) |
Middle East | SAU (Riyadh - Partner Region) |
For more information, see Specify a function from Function Compute as a backend server for ALB.
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.