Traffic is the cumulative value of the data flow generated when you access Object Storage Service (OSS), including outbound traffic over the Internet, outbound traffic over the internal network, inbound traffic over the Internet, inbound traffic over the internal network, Content Delivery Network (CDN) back-to-origin outbound traffic, and cross-region replication (CRR) traffic. OSS charges total usage of traffic generated when you access OSS.

Note This topic describes the definition and billing methods of billable items for traffic usage. For more information about pricing, see Object Storage Service Pricing.
Billable item Purpose Billing method
Outbound traffic over the Internet (oss_flow_out) Traffic generated when data is transferred from OSS to the client over the Internet.
OSS provides a free quota of 100 GB for outbound traffic over the Internet. The traffic that exceeds 100 GB is charged based on the unit price of the tier.
  • Pay-as-you-go:
    • Traffic usage ≤ 100 GB: free of charge.
    • Traffic usage > 100 GB: Fees = Unit price of the current tier × Outbound traffic over the Internet (GB).

      Example: A total of 120 GB of outbound traffic over the Internet is generated when you use a bucket located in the US (Virginia) region. You are charged for 20 GB of outbound traffic over the Internet.

    Note Traffic in mainland China is generated during peak and nonpeak hours. For more information about prices, see Object Storage Service Pricing.
  • Subscription: downstream data transfer plan
Inbound traffic over the Internet Traffic generated when data is transferred from the client to OSS over the Internet. Free of charge
Outbound traffic over the internal network Traffic generated when data is transferred from OSS to the client over the internal network. For more information about how to use internal endpoints, see Access OSS over the internal network. Free of charge
Inbound traffic over the internal network Traffic generated when data is transferred from the client to OSS over the internal network. Free of charge
CDN back-to-origin outbound traffic (oss_cdn_flow_out) Back-to-origin traffic generated when data is transferred from OSS to CDN edge nodes.
  • Pay-as-you-go: Traffic fees = Total CDN back-to-origin outbound traffic/hour (GB) × Unit price/GB
  • Subscription: not supported
CRR traffic (ReplicationDatasize) Outbound traffic generated when you use CRR to synchronize data from a source bucket to a destination bucket.
  • Pay-as-you-go: Traffic fees = Total CRR traffic (GB) × Unit price/GB.
  • Subscription: not supported