After you purchase a pay-as-you-go Global Accelerator (GA) instance whose bandwidth billing method is pay-by-data-transfer, you are charged for data transfer over the global transmission network of Global Accelerator. Data transfer fees are managed by Cloud Data Transfer (CDT). This topic describes the billing rules for cross-border data transfer over cross-border Express Connect circuits.
Prerequisites
If you want to use Express Connect circuits to accelerate data transfer between regions in the Chinese mainland and regions outside the Chinese mainland, including China (Hong Kong), China (Macao), and China (Taiwan), make sure that your enterprise account has completed real-name registration. For more information, see FAQ about real-name registration.
Make sure that the domain name of the accelerated application has an Internet Content Provider (ICP) number. Otherwise, cross-border acceleration does not take effect. For more information about how to apply for an ICP number, see Overview.
Billable items
The following table describes the billable items in different scenarios.
The connected areas are determined based on the configurations of the acceleration area and the area where the endpoint group is deployed.
This topic describes the billing rules for cross-border data transfer over Cross-border Express Connect. For more information about the billing rules for other types of data transfer, see Pay-by-data-transfer.
indicates that you are charged the fee and 
indicates that you are not charged the fee.
Acceleration area | Area where the endpoint group is deployed | Origin server type | Internet data transfer fee in the acceleration area | Internet data transfer fee in the area where the endpoint group is deployed | Cross-border data transfer fee |
Chinese mainland | Regions outside the Chinese mainland, including China (Hong Kong), China (Macao), and China (Taiwan) | On Alibaba Cloud |
|
|
|
Outside Alibaba Cloud |
|
| |||
Regions outside the Chinese mainland, including China (Hong Kong), China (Macao), and China (Taiwan) | Chinese mainland | On Alibaba Cloud |
|
| |
Outside Alibaba Cloud |
|
|
Billing rules
The following table describes the billing rules for cross-border data transfer over cross-border Express Connect circuits.
Data transfer type | Billing rule | Pricing | Billing method |
Cross-border data transfer | You are charged for outbound data transfer in each region. Content delivery is accelerated between regions in the Chinese mainland and regions outside the Chinese mainland, including China (Hong Kong), China (Macao), and China (Taiwan). | If you use cross-border Express Connect circuits, the service level is Gold and the unit price is USD 0.8 per GB. | Pay-as-you-go You are charged based on the actual amount of data transfer. Fees are billed after data is transmitted. Bills are generated by CDT. |
For more information about how CDT bills cross-border data transfer, see Cross-region data transfers.
The unit price of data transfer in this topic is for reference only. The actual prices on the bills shall prevail. For more information about how to query bills of data transfer in CDT, see Query bills and usage
Billing examples
This section provides an example of how to calculate the data transfer fees of a GA instance. For more information about the billing of GA instances, see Billing of subscription GA instances and Billing of pay-as-you-go GA instances.
The unit price of data transfer in this example is for reference only. You can view the actual unit prices in your bills. For information about how to query CDT bills, see Query bills and usage.
Scenario 1: Clients in the Chinese mainland access an application deployed outside Alibaba Cloud in a region outside the Chinese mainland
In the following figure, the acceleration region is the China (Shanghai) region, the endpoint group is deployed in the US (Silicon Valley) region, and the endpoint is deployed outside Alibaba Cloud. Requests are forwarded to the endpoint over the Internet. After a Global Accelerator instance is purchased, 1,000 GB of data is transferred within a month. The data transfer fees include the Internet data transfer fee in the China (Shanghai) region, the Internet data transfer fee in the US (Silicon Valley) region, and the cross-border data transfer fee for using cross-border Express Connect circuits.
Unit price of Internet data transfer in the Chinese mainland = USD 0.118 per GB Unit price of Internet data transfer in North America = USD 0.074 per GB Unit price of cross-border data transfer from the Chinese mainland to North America over cross-border Express Connect circuits = USD 0.8 per GB The data transfer fees are calculated by using the following formulas: Internet data transfer fee in the China (Shanghai) region = Unit price of Internet data transfer in the Chinese mainland × Amount of data transfer = USD 0.118 per GB × 1,000 GB = USD 118 Internet data transfer fee in the US (Silicon Valley) region = Unit price of Internet data transfer in North America × Amount of data transfer = USD 0.074 per GB × 1,000 GB = USD 74 Cross-border data transfer fee (cross-border Express Connect circuits) = Unit price of cross-border data transfer from the Chinese mainland to North America over cross-border Express Connect circuits × Amount of data transfer = USD 0.8 per GB × 1,000 GB = USD 800 Total data transfer fee = Internet data transfer fee in the China (Shanghai) region + Internet data transfer fee in the US (Silicon Valley) region + Cross-border data transfer fee (cross-border Express Connect circuits) = USD 118 + USD 74 + USD 800 = USD 992Scenario 2: Clients in the Chinese mainland access an application deployed on Alibaba Cloud in a region outside the Chinese mainland
In the following figure, the acceleration region is the China (Shanghai) region, the endpoint group is deployed in the US (Silicon Valley) region, and the endpoint is deployed on Alibaba Cloud. Requests are forwarded to the endpoint over the internal network. After a Global Accelerator instance is purchased, 1,000 GB of data is transferred within a month. The data transfer fees include the Internet data transfer fee in the China (Shanghai) region and the cross-border data transfer fee over cross-border Express Connect circuits.
Unit price of Internet data transfer in the Chinese mainland = USD 0.118 per GB Unit price of cross-border data transfer from the Chinese mainland to North America over cross-border Express Connect circuits = USD 0.8 per GB The data transfer fees are calculated by using the following formulas: Internet data transfer fee in the China (Shanghai) region = Unit price of Internet data transfer in the Chinese mainland × Amount of data transfer = USD 0.118 per GB × 1,000 GB = USD 118 Internet data transfer fee in the US (Silicon Valley) region = USD 0 Cross-border data transfer fee (cross-border Express Connect circuits) = Unit price of cross-border data transfer from the Chinese mainland to North America over cross-border Express Connect circuits × Amount of data transfer = USD 0.8 per GB × 1,000 GB = USD 800 Total data transfer fee = Internet data transfer fee in the China (Shanghai) region + Internet data transfer fee in the US (Silicon Valley) region + Cross-border data transfer fee (cross-border Express Connect circuits) = USD 118 + USD 0 + USD 800 = USD 918