Dear Alibaba Cloud User,

Anti-DDoS Services will adjust the burstable clean bandwidth and burstable QPS features starting from 10:00 on March 6, 2026.

Changes

• Burstable clean bandwidth and burstable QPS billing features are enabled by default for users who purchase Anti-DDoS Services.
• The Monthly 95th Percentile billing model and the option to disable the features are removed for burstable clean bandwidth and burstable QPS. Only the Daily 95th Percentile billing model is supported.
• The peak values for burstable clean bandwidth is fixed at the maximum specifications. See the clean bandwidth specification constraints.
• The peak values for burstable clean bandwidth and burstable QPS are designated as the performance threshold warning metrics, and the burstable billing peak will be based on the actual 95th percentile.

Implementation schedule

• For new users of Anti-DDoS Proxy (Chinese Mainland), the new rules take effect at 10:00 on March 6, 2026.
• For existing users of Anti-DDoS Proxy (Chinese Mainland), the new rules take effect at 10:00 on May 28, 2026.
• For new users of Anti-DDoS Proxy (Outside Chinese Mainland), the new rules take effect at 10:00 on March 6, 2026.
• For existing users of Anti-DDoS Proxy (Outside Chinese Mainland), the new rules take effect at 10:00 on May 28, 2026.
• For new users and existing users of Anti-DDoS Origin 2.0 (Subscription), the new rules take effect at 10:00 on May 28, 2026.

Impact

• For users who purchase new Anti-DDoS Proxy instances after 10:00 on March 6, 2026, the burstable 95th percentile billing feature is enabled by default. Pay-as-you-go bills are generated when actual usage exceeds the purchased base specifications. For more information, see billing for burstable clean bandwidth and burstable QPS billing.
• For users with existing Anti-DDoS Proxy instances and all users of Anti-DDoS Origin 2.0 (Subscription), the burstable Daily 95th Percentile billing feature will be enabled by default after 10:00 on May 28, 2026. See Anti-DDoS Origin 2.0 (Subscription) billing for burstable clean bandwidth.
• Instances that have enabled burstable Monthly 95th Percentile billing are temporarily unaffected.
• Instances whose actual usage does not exceed the purchased base specifications are not affected.