Help Center/ Anti-DDoS Service/ FAQs/ AAD FAQs/ Fees/ How Is the Elastic Service Bandwidth Charged?
Updated on 2025-07-14 GMT+08:00

How Is the Elastic Service Bandwidth Charged?

Billing rules

The service bandwidth fees of AAD instances in different scenarios are described as follows:

  • If the actually used service bandwidth is less than or equal to the service bandwidth, no elastic service bandwidth fee is generated.
  • Service bandwidth < Actual service bandwidth < Elastic service bandwidth: Elastic service bandwidth fees will be generated.
  • If the actually used service bandwidth is greater than or equal to the elastic service bandwidth, the elastic service bandwidth fee will be generated.

Billing Principles

  • Monthly 95th percentile billing

    The bandwidth is sampled every 5 minutes in a calendar month. The sampling vertices are sorted in descending order of the peak value, the maximum value of 5% is removed, and the maximum value among the remaining values is used as the billable bandwidth. Figure 1 shows how to calculate the monthly 95th percentile bandwidth for 30 days.

    Figure 1 Monthly 95th percentile billing