That must be why Amazon&#x27;s SLA is defined as follows[1] :<p>If amazon loses more than 3 datacenters (only total loss of external connectivity for all of your instances in an entire availability zone, or total loss of hard disk access, again only counts if all your instances completely lose hard disk&#x2F;EBS access) for more than 45 minutes in a month you get 10% of what you pay as a voucher for future ec2 usage. If they lose it for more than 7 hours you get 30%.<p>So no, Amazon, or at least their legal department, does not trust their own competency. Or at least, they&#x27;re not willing to risk any revenue on that, but they&#x27;re willing to give you a small future discount to encourage you to restart using the service. Oh and you only get that if you explicitly ask for it.<p>If they lose your data on EBS&#x2F;S3&#x2F;Dynamo&#x2F;..., you get nothing. So having any data exclusively on any Amazon service should be cause for getting fired, and this of course also means that using Dynamo for storing anything non-trivial is a big no-no from a disaster recovery standpoint.<p>So I have to say, I would suggest you do not trust Amazon with either your data, nor with keeping your site online. Yes, historically their performance has been better than this, but ...<p>This reads worse than the SLAs on internet connectivity from places like level3 and cogent (pay 10% less if they fuck up completely for more than 2 days).<p>[1] <a href="https:&#x2F;&#x2F;aws.amazon.com&#x2F;ec2&#x2F;sla&#x2F;" rel="nofollow">https:&#x2F;&#x2F;aws.amazon.com&#x2F;ec2&#x2F;sla&#x2F;</a>