How Is AAD Billed?

To use AAD, you need to purchase AAD instances.

AAD instances are charged by the service bandwidth, basic protection bandwidth, and elastic protection bandwidth you configure.

**Table 1** Billing items
Billing Item	Billing Modes	Pricing details
Service Bandwidth	Prepaid by month or year	Service bandwidth for the AAD server room to forward scrubbed traffic to origin servers. NOTE: If the AAD server room is outside HUAWEI CLOUD, it is recommended that the service bandwidth be greater than or equal to the egress bandwidth of the origin servers.
Basic Protection Bandwidth	Prepaid by month or year	Basic bandwidth for defending against attacks. Traffic that does not exceed this bandwidth will be scrubbed by AAD without incurring additional fees.
Elastic Protection Bandwidth	Postpaid by day	Maximum available bandwidth for defending against attacks. For details about the price of the elastic protection bandwidth, see the Product Pricing Details tab in Price Calculator.

Billing details for elastic protection bandwidth:

Billing standard: It depends on the peak attack traffic on the day. If multiple attacks occur on a day, only the attack with the peak traffic counts.
Postpaid: Elastic protection fees are generated based on the attack traffic peak. If there is no attack, no elastic protection fee is generated.
Specifications adjustment: You can adjust the elastic protection bandwidth on the AAD console. Once adjusted, the new elastic protection bandwidth takes effect immediately.
Free-to-use: If the elastic protection bandwidth is set to the same value as the basic protection bandwidth, you do not need to pay for elastic protection.

Parent topic: Billing FAQs of AAD