Granted it was only for a few hours but they had a huge outage in February this year (https://aws.amazon.com/message/41926/ https://aws.amazon.com/message/41926

Granted it was only for a few hours but they had a huge outage in February this year (https://aws.amazon.com/message/41926/ https://aws.amazon.com/message/41926/). This affected pretty much all us-east customers (Which are most AWS customers) so it should be possible to extrapolate from there. Although I think a lot of customers learned the importance of replication that day so the next outage might not be that bad.