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Billing Mode

Anti-DDoS Advanced billing includes the fees of base protection bandwidth (frozen fees payment), elastic protection bandwidth (pay-as-you-go), and application bandwidth (frozen fees payment).

Base protection

Base protection is on the monthly frozen fees payment. The detailed pricing is as follows:

Note：

• Query Per Second (QPS) here is used to measure the number of CC attack requests per second that an Anti-DDoS Advanced instance can defend against.
• Tencent Cloud provides up to TB-level protection capability. Contact your sales rep if necessary.

Elastic protection

You can enable elastic protection as needed.

• If elastic protection is not enabled for an instance, its base protection bandwidth will be the maximum protection bandwidth and no extra fees will be incurred.
• If elastic protection is enabled for an instance, its maximum protection bandwidth will be the elastic protection bandwidth.
  • If elastic protection is not triggered, no fees will be incurred.
  • If elastic protection is triggered and the attack traffic is higher than the base protection bandwidth but lower than the elastic protection bandwidth, you will be billed on the following day based on the tiered price of the peak attack bandwidth of the current day.

The detailed pricing of elastic protection is as follows:

Forwarding rules

Note：

The number of forwarding rules is the total number of TCP/UDP ports (for non-website connections) and HTTP/HTTPS domain names (for website connections) that you configure for an Anti-DDoS Advanced instance.

Application bandwidth

Application bandwidth is the bandwidth used for forwarding the application traffic that has been cleansed by the Tencent Cloud Anti-DDoS data center back to the data center on the real server.
It is on a monthly-subscribed frozen fees payment. For non-Tencent Cloud users in the Chinese mainland, 100 Mbps forwarding bandwidth will be given free of cost after they purchase the base protection package. The detailed pricing is as follows:

The relationship between the application bandwidth and the number of layer-7 requests is as follows:

Note：

• The application bandwidth limit applies to both the inbound Anti-DDoS forwarding traffic and the outbound Anti-DDoS traffic. The application bandwidth needs to be higher than the peak bandwidth of the two, whichever is greater. If the actual application bandwidth is continuously higher than the application bandwidth selected when you purchased your Anti-DDoS Advanced instance, packet loss may occur. This might affect your application. We recommend upgrading your application bandwidth in time.
• The QPS metric used here is a general number of queries per second when there is no attack. If the actual QPS of your application is higher than the specification purchased, please adjust the specification of your Anti-DDoS Advanced instance to prevent packet loss. You can refer to the relationship table above to increase the application bandwidth of your Anti-DDoS Advanced instance and the general HTTP/HTTPS QPS metric.

Other Metrics

See the following table for descriptions of other metrics:

Note：

The specifications above are only the ready-made ones. If you find the specifications are not ideal, please contact Tencent Cloud technical support to customize a higher specification.

Billing Example

Anti-DDoS Advanced uses a combined billing method. Below is a fee calculation example:
A user purchases an Anti-DDoS Advanced instance in the Shanghai region, with "20 Gbps base protection bandwidth" and "50 Gbps elastic protection bandwidth".
One day, DDoS attacks occur with a peak attack bandwidth of 45 Gbps, which exceeds the base protection bandwidth and triggers elastic protection. The peak attack bandwidth falls in the billing tier between 40 Gbps and 50 Gbps, and the elastic protection fee generated that day is 600 USD.
Therefore, the user needs to pay a total of 3,000 USD, including 2,400 USD of the monthly base protection fee and 600 USD of the elastic protection fee generated that day.