[toomuchtodo]

Compared to S3, which while they say 11 9s of durability, they only commit to 99% uptime on a monthly basis (98% for their new S3 intermittent availability offering):

https://aws.amazon.com/s3/sla/

[dexterdog]

They actually commit to 99.9 and 99 respectively after which they begin to give credit back. They credit back at a higher rate after 99 and 98.