Traffic is defined as the cumulative data flow that is generated when you access Object Storage Service (OSS). Traffic includes outbound traffic over the Internet, outbound traffic over the internal network, inbound traffic over the Internet, inbound traffic over the internal network, CDN back-to-origin traffic, and cross-region replication (CRR) traffic. You are charged for the total traffic that is generated when you access OSS.

Note This topic describes the billable items and billing methods of OSS. For more information about OSS pricing, see Object Storage Service pricing.

Billable items

OSS provides a free quota of 100 GB per month for outbound traffic over the Internet (NetworkOut). That is, if your monthly outbound traffic over the Internet is less than or equal to 100 GB, you are not charged for outbound traffic over the Internet. The free quota is available only in the following regions: China (Hong Kong), US (Silicon Valley), US (Virginia), Singapore, Australia (Sydney), Malaysia (Kuala Lumpur), Indonesia (Jakarta), Philippines (Manila), Thailand (Bangkok), Japan (Tokyo), South Korea (Seoul), Germany (Frankfurt), UK (London), UAE (Dubai), and India (Mumbai). The following table describes the billing rules for traffic that is generated when you access OSS.

Important You are not charged for requests for which HTTP status code 4xx or 5xx is returned.
Billable items Billing rule Billing cycle Billing method
Outbound traffic over the Internet (NetworkOut) Traffic that is generated when data is transferred from OSS to the client over the Internet. You are billed on an hourly basis. The fees are automatically deducted from the balance of your Alibaba Cloud account. Bills are generally generated after a billing cycle ends. The time when bills are generated is determined by the system.
  • Pay-as-you-go: Traffic fees (Traffic usage > 100 GB) = (Outbound traffic over the Internet - 100 GB) × Unit price of the current tier.

    Example: If a total of 120 GB of outbound traffic over the Internet is generated when you use a bucket located in the US (Virginia) region during the current month, you are charged for the amount of traffic over the Internet that exceeds the free quota (120 GB - 100 GB = 20 GB).

  • Resource plan: Go to the OSS Resource Plans page and select Outbound Traffic Plan.
Internet inbound traffic Traffic that is generated when data is transferred from the client to OSS over the Internet. Free of charge.
Outbound traffic over the internal network Traffic that is 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 that is generated when data is transferred from the client to OSS over the internal network. Free of charge.
CDN back-to-origin traffic (CdnOut) Back-to-origin traffic that is generated when data is transferred from OSS to CDN edge nodes.
  • Pay-as-you-go: Traffic fees = Total CDN back-to-origin traffic (GB) × Unit price per GB.
  • Resource plan: not supported.
CRR traffic (ReplicationDatasize) Outbound traffic that is generated when you use cross-region replication (CRR) to synchronize data from a source bucket to a destination bucket.
  • Pay-as-you-go: Traffic fees = Total CRR traffic (GB) × Unit price per GB.
  • Resource plan: not supported.

References