A region is the physical location of an IDC. In Tencent Cloud, different regions are fully isolated, ensuring maximum stability and fault tolerance among regions. To reduce access latency and increase download speeds, we recommend you select the region nearest to your customers.
You can view the following table or use the DescribeRegions API to view a complete list of regions.
Availability zones refer to Tencent Cloud physical IDCs in the same region with independent power supplies and network resources. They are designed to ensure that a failure within one availability zone can be contained (except for large-scale disasters or major power failures) without spreading to and affecting other zones. This ensures the stability of the businesses we host. By starting an instance in an independent availability zone, users can protect their applications from being affected by failures that occur in a single location.
You can use
DescribeAvailabilityZones to get a complete list of availability zones.
Tencent Cloud products in the same VPC are interconnected through the private network, meaning they can communicate using private IPs, even if they are in different availability zones.
Private network interconnection refers to the interconnection of resources under the same account. Resources under different accounts are completely isolated on the private network.
|South China (Guangzhou)
|Guangzhou Zone 1 (sold out)
|Guangzhou Zone 2
|Guangzhou Zone 3 ap-guangzhou-3|
|Guangzhou Zone 4 ap-guangzhou-4||East China (Shanghai)
|Shanghai Zone 1
|Shanghai Zone 2ap-shanghai-2|
|Shanghai Zone 3ap-shanghai-3|
|Shanghai Zone 4ap-shanghai-4|
|East China (Nanjing)
|Nanjing Zone 1
|Nanjing Zone 2ap-nanjing-2|
|North China (Beijing)
|Beijing Zone 1
|Beijing Zone 2ap-beijing-2|
|Beijing Zone 3ap-beijing-3|
|Beijing Zone 4ap-beijing-4|
|Southwest China (Chengdu)
|Chengdu Zone 1
|Chengdu Zone 2ap-chengdu-2|
|Southwest China (Chongqing)
|Chongqing Zone 1
|Hong Kong/Macao/Taiwan (Hong Kong, China)
|Hong Kong Zone 1 (Nodes in Hong Kong, China can cover Hong Kong/Macao/Taiwan)
|Hong Kong Zone 2 (Nodes in Hong Kong, China can cover Hong Kong/Macao/Taiwan)
|Southeast Asia Pacific (Singapore)
|Singapore Zone 1 (Singapore nodes can cover Southeast Asia Pacific)
|Northeast Asia Pacific (Seoul)
|Seoul Zone 1 (Seoul nodes can cover Northeast Asia Pacific)
|Northeast Asia Pacific (Tokyo)
|Tokyo Zone 1 (Tokyo nodes can cover Northeast Asia Pacific)
|South Asia Pacific (Mumbai)
|Mumbai Zone 1 (Mumbai nodes can cover South Asia Pacific)
|Mumbai Zone 2 (Nodes in Mumbai can cover South Asia Pacific)
|Southeast Asia Pacific (Bangkok)
|Bangkok Zone 1 (Bangkok nodes can cover Southeast Asia Pacific)
|North America (Toronto)
|Toronto Zone 1 (Toronto nodes can cover North America)
|Western US (Silicon Valley)
|Silicon Valley Zone 1 (Silicon Valley nodes can cover Western US)
|Silicon Valley Zone 2 (Silicon Valley nodes can cover Western US) na-siliconvalley-2|
|East US (Virginia)
|Virginia Zone 1 (Virginia nodes can cover Eastern US)
|Virginia Zone 2 (Virginia nodes can cover Eastern US)
|Frankfurt Zone 1 (Frankfurt nodes can cover Europe)
|Moscow Zone 1 (Moscow nodes can cover Europe)
When selecting a region and availability zone, take the following into consideration:
The following table describes which Tencent Cloud resources are global, which are regional, and which are specific to availability zones.
|Resource||Resource ID format||Type||Description|
|User Accounts||No limit||Globally unique||Users can use the same account to access Tencent Cloud resources from around the world.|
|SSH Keys||skey-xxxxxxxx||Global||Users can use an SSH key to bind a CVM in any region under the account.|
|CVM Instances||ins-xxxxxxxx||CVM instances are specific to an availability zone.||A CVM instance created in an availability zone is not available to other availability zones.|
|Custom Images||img-xxxxxxxx||Regional||Custom images are available to all availability zones of the same region. Use **Copy Image** to copy a custom image if you need to use it in other regions.|
|EIPs||eip-xxxxxxxx||Regional||EIPs can only be associated with instances in the same region.|
|Security Groups||sg-xxxxxxxx||Regional||Security Group can only be associated with instances in the same region. Tencent Cloud automatically creates three default security groups for users.|
|Cloud Block Storage||disk-xxxxxxxx||CSB disks are specific to an availability zone.||Users can only create a Cloud Block Storage disk in a specific availability zone and can mount it to instances in the same availability zone.|
|Snapshots||snap-xxxxxxxx||Regional||After creating a snapshot for a specific cloud disk, users can use this snapshot in this region for other operations (such as creating cloud disks).|
|Cloud Load Balancers||clb-xxxxxxxx||Regional||Cloud Load Balancer can be bound with CVMs in different availability zones in the same region for traffic forwarding.|
|VPC||vpc-xxxxxxxx||Regional||A VPC is created under a certain region. You can create resources in different AZs but in the same VPC.|
|Subnets||subnet-xxxxxxxx||Subnets are specific to availability zones.||Users cannot create subnets across availability zones.|
|Routing Tables||rtb-xxxxxxxx||Regional||When creating a routing table, users need to specify a VPC. Therefore, routing tables are regional as well.|
Once launched, an instance cannot be migrated. However, you can create a custom image of your CVM instance and use the image to launch or update an instance in a different availability zone.
Actions such as launching and viewing instances have region attributes. If the image of the instance that you need to launch does not exist in the region, the image needs to be copied to the desired region. For more information, see Copying Images.