AWS provides all the tools and services you need to create a resilient, highly available and highly secure cloud infrastructure, but it`s up to you as a customer to ensure that best practices are followed, that you respect the principles of AWS Well Architected, and that you respect your responsibilities in the AWS shared responsibility model. : AWS offers service credits for non-compliance with ALS operating time, but it is important to note that they are not applied automatically. To obtain service credits for downtime, AWS customers must assert a right to credit by opening a business in the AWS assistance centre with the words “SLA credit requirement” in the subject line and specifying the details of the dates and times of defaults or failures for which you use secure credits with protocols and resource IDs for the services concerned. If service credits are available for loss, they are normally used as credit on future invoices for the same service. This Amazon Compute Service Level Agreement (“SLA”) is a policy for the use of included services (below) and applies separately to each account that uses the services contained. In the event of a conflict between the terms and conditions of this ALS and the terms of the AWS customer agreement or any other agreement with us regarding your use of our services (the “Contract”), the terms of this ALS apply, but only to the extent of such a conflict. The terms used in this agreement, but which are not defined here, have the meaning of the agreement. So you need to consider some important things when trying to understand Amazon`s service level agreements. The most important advice I would offer is not to rely on service level agreements to guarantee the operating time of your applications. The ALS provides some guidance on the hours of operation you can expect, but the service credits offered, provided you remember to claim them, will likely be unlikely to compensate for the downtime your application is experiencing, and the likely business consequences in terms of lost productivity or even lost revenue.
For EC2 (and related services), the credits available are: AWS has released a Service Level Agreement (SLA) for AWS Systems Manager, which offers availability guarantees for AWS Systems Manager. In this article, we look at THE SLAs for some of the most commonly used AWS services, including EC2, RDS, EBS, ECS, Fargate and S3, to give you a taste of the offer, but this is only a guide and should not be considered a substitute for reading real SLAs for the services you want to use. The service credits for S3 services (excluding the ones mentioned above) are as follows: It is also important to ensure that you have good observability of your application infrastructure – if you do not recognize service outages, you cannot make claims against ALS, so you can no longer get credits. You need to be able to back up your rights with log files, so make sure you know where to get them! AWS support response times are separated from each SERVICE-Uptime-SLAs.