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Legal:Content Delivery Network (CDN) Service Level Agreement

Last Updated:Jan 13, 2023

This Alibaba Cloud International Website CDN Service Level Agreement (“SLA”) applies to your purchase and use of the Alibaba Cloud International Website CDN (“Service”) and your use of the Service is subjected to the terms and conditions of the Alibaba Cloud International Website Product Terms of Service (“Product Terms”) between the relevant Alibaba Cloud entity described in the Product Terms (“Alibaba Cloud”, “us”, or “we”) and you. This SLA only applies to your purchase and use of the Services for a fee, and shall not apply to any free Services or trial Services provided by us.


1.1 “Downtime” means the total number of minutes during which the Error Rate is greater than 0.05% for at least two (2) consecutive Time Intervals.

1.2 “Error Rate” means the total number of Failed Transactions divided by the Total Transactions during each Time Interval.

1.3 “Exclusions” means any unavailability, suspension, or termination of the Service that is due to any of the following:

(a) suspension or termination described in Clause 8.2 of the Membership Agreement;

(b) events that are outside of our reasonable control, including any events of force majeure, such as earthquakes, epidemic, downtime of the relevant submarine communication cables, failure of telecommunications infrastructure or systems, hacking, cyberattacks, riots, Acts of God, etc.;

(c) events that result from any actions or inactions on your part in connection with your use of the Service;

(d) events that arise out of your or any third parties’ (not under our direct control) equipment, software, and/or technology;

(e) events that result from your failure to adhere to any required configurations for the use of the Service;

(f) events that result from your or your users’ illegal or unlawful use of the Service, or your breach of any of the terms and conditions of the Alibaba Cloud Product Terms, Terms of Use, or Membership Agreement;

(g) events that result from your non-payment of any charges payable to us;

(h) events that result from critical accidents or failure of the relevant internet service provider(s);

(i) Scheduled Downtime;

(j) events that result from an Abnormally High Peak Bandwidth, unless you have provided Alibaba Cloud with three (3) business days’ prior written notice regarding the Abnormally High Peak Bandwidth and have obtained Alibaba Cloud’s approval. “Abnormally High Peak Bandwidth” means, in connection with the Service, (1) the estimated peak bandwidth of current month shows an increase or decrease of more than 30% of the peak bandwidth compared with that of the prior month or the increased or decreased peak bandwidth of the current month exceeds 500Gbps compared with that of the prior month; or (2) if peak bandwidth in the prior month is zero, and the estimated peak bandwidth for the current month is expected to exceed 200Gbps.

(k) if charging by traffic, events that result from your peak bandwidth exceeding 10Gbps limit unless you have provided Alibaba Cloud with three (3) business days’ prior written notice for approval and have obtained Alibaba Cloud’s approval.

1.4 “Failed Transactions” means internal server errors indicated by Alibaba Cloud as error status “5XX” for transaction requests and normal user requests failing to reach Alibaba Cloud CDN due to declared service outage within each Time Interval.5XX errors caused by back-to-origin errors or banned domain names do not qualify as Failed Transactions. The number of failed requests during declared Service outage duration are calculated by referencing the average number of requests received during the 7-day period prior to the outage.

1.5 “Monthly Service Fee” means the total charges paid by you for the Services in one billing month. For the upfront lump sum payment paid by you for the Service, Monthly Service Fee equals to the lump sum payment divided by the number of months of the Service covered by such payment.

1.6 “Monthly Uptime Percentage” means a percentage of Service availability calculated by reference to the following formula. The calculation applies to all the CDN domains under a customer’s account (excluding domains that have less than 1 million (1,000,000) requests within a billing month).

1.7 “Scheduled Downtime” means the performance failure relating to network, hardware, or service maintenance or upgrades. We will use reasonable commercial endeavors to provide written notice to you prior to the commencement of Scheduled Downtime.

1.8 “Service Credit” means the percentage of the Monthly Service Fee for the affected Service that is credited to you for a claim following our service credit claim process under Section 3.

1.9 “Service Guarantee” shall have the meaning set forth in Clause 2 of this SLA.

1.10 “Time Interval” means 5 minutes.

1.11 “Total Transactions” means the total number of requests from you as received by Alibaba Cloud within each Time Interval.


We shall use commercially reasonable endeavors to provide a Monthly Uptime Percentage of no less than 99.9% each billing month in connection with your use of the Service (the “Service Guarantee”). If we fail to meet the Service Guarantee then, subject to the terms and conditions of this SLA, you shall be entitled to claim a Service Credit in accordance with Section 3 herein. The Service Guarantee does not apply to any events described in the Exclusions.


3.1 If you believe that the Service Guarantee in connection with your use of the Service is not met in any billing month, then you may file a claim for Service Credit in accordance with this Clause 3.1. Your claim must include at least the following information:

(a) A detailed description of the incident;

(b) The dates and number of Failed Transactions, and number of Total Transactions within the claimed month;

(c) Information relating to the affected instances; and

(d) Any other information that we reasonably ask you to provide to support your claim.

3.2 Your claim for a Service Credit must be received by us within thirty (30) days after the last day of the billing month of occurrence of the event giving rise to the claim. Your failure to submit the claim within this time will be deemed to be an irrevocable waiver of your right to claim and receive such Service Credit. Once we receive your claim, we will review and evaluate your claim and may require your co-operation in conducting a joint investigation to ascertain whether the Service Guarantee has been breached and if so, the cause of the failure. We will make a good faith determination if a Service Credit is to be provided to you in our sole discretion and will inform you the result as soon as reasonably practicable. We will use commercially reasonable effort to process your claim and provide the Service Credit to you as early as possible.

3.3 If we, after our good faith review of your claim, determine that a Service Credit must be provided to you, the Service Credit to be provided will be the following:

Monthly Uptime Percentage

Service Credit Percentage

Less than 99.9%, but equal to or greater than 99%


Less than 99.00%


3.4 Subject to Clauses 3.1, 3.2, and 3.3, the Service Credit shall apply to set-off the fees payable by you for the Service only. The Service Credit shall not be used or applied to set-off the fees for the other Alibaba Cloud services, unless otherwise stated to you in writing by us from time to time.

3.5 The Service Credit provided in any billing month for a particular Service or Service resource will not, under any circumstance, exceed 25% of your Monthly Service Fee for that affected Service or Service resource, as applicable, in the billing month.

3.6 The Service Credit provided to you must be used within one (1) month from the date the Service Credit is made available for you to use.

3.7 You agree that any decision or determination made by us relating to your claim for any Service Credit shall be final and binding on you.


4.1 In the event of any inconsistency between yours and our system records relating to your claim, unless the discrepancy is caused by any material error or malfunction of our system, our system record shall at all times prevail and be the final and conclusive reference for calculating the Service Credits to be provided to you.

4.2 The Service Credits provided in this SLA are your sole and exclusive remedy for any failure in the performance of the Service and we shall not be liable to the you or any person claiming through you for any direct, indirect, consequential or incidental damages or losses or expenses whatsoever, including but not limited to, loss of profits or business and irrespective of whether the claim arises in contract, tort (including negligence), or otherwise.

4.3 We reserve the right to change the terms of this SLA anytime by posting an amended and restated version of this SLA on the Alibaba Cloud International Website. Your continued use of the service after the publication of the amended SLA shall be deemed as your acceptance of the amended SLA.

4.4 This SLA shall constitute part of your agreement for your purchase and use of the Service.