Transfer acceleration speeds up uploads and downloads over long distances by routing traffic through acceleration endpoints. Fees apply only when you use acceleration endpoints—the default bucket endpoint remains free.
For unit prices, see Object Storage Service pricing.
Billable items
Using an acceleration endpoint generates two separate charges:
Transfer acceleration fee — based on the direction of data movementTransfer acceleration plan for the Transfer Acceleration O2O regionTransfer acceleration plan for the M2M region
Outbound Internet traffic fee — based on the amount of data transferred out
Example: If you download 1 GB from a bucket in China (Hangzhou) to Germany (Frankfurt) via an acceleration endpoint, you are charged a transfer acceleration fee (AccO2MOut) for 1 GB and an outbound Internet traffic fee for 1 GB.
Note: Billable items are charged hourly. Bills are generated after each billing cycle ends; the exact generation time is determined by the system.
Upload acceleration traffic
| Code | Direction |
|---|---|
| AccM2MIn | Between regions in the Chinese mainland |
| AccM2OIn | From the Chinese mainland to outside the Chinese mainland |
| AccO2MIn | From outside the Chinese mainland to the Chinese mainland |
| AccO2OIn | Between regions outside the Chinese mainland |
Download acceleration traffic
| Code | Direction |
|---|---|
| AccM2MOut | Between regions in the Chinese mainland |
| AccM2OOut | From outside the Chinese mainland to the Chinese mainland |
| AccO2MOut | From the Chinese mainland to outside the Chinese mainland |
| AccO2OOut | Between regions outside the Chinese mainland |
Billing methods
If your transfer volume is unpredictable, use pay-as-you-go. If you transfer large amounts of data regularly over long distances, a transfer acceleration plan offers better cost efficiency.
| Billing method | Description | Best for |
|---|---|---|
| Pay-as-you-go | Charged for actual usage; use resources first, pay afterwards. Default for all billable items. | Unpredictable or low transfer volumes; temporary or one-time acceleration needs |
| Transfer acceleration plan | Prepaid resource plan that offsets transfer acceleration fees. Higher priority than pay-as-you-go when settling bills. Must be purchased before use. | Global-scale businesses; frequent large-volume long-distance transfers |
Resource plans by traffic direction
| Billing codes | Resource plan |
|---|---|
| AccM2MIn, AccM2MOut | Transfer acceleration (M2M) resource plans |
| AccM2OIn, AccO2MIn, AccM2OOut, AccO2MOut | Transfer acceleration (M2O_O2M) resource plans |
| AccO2OIn, AccO2OOut | Transfer acceleration (O2O) resource plans |