8. Amazon Web Services
In September, a Friday the 13th outage took out regional Amazon Web Services due to a load balancing issue. Amazon resolved the connectivity issues for the load balancers and increased provisioning times to prevent the issue going forward. While the service was only down for about two hours and affected only a single availability zone in Virginia, it was an important reminder for companies to have backup plans for cloud infrastructure in case of outages, said a report by continuity software company Neverfail.