Update - Update: AWS have executed multiple shifts of internal service traffic to a separate set of network devices. They are now beginning to see significant recovery for AWS service availability in the US-EAST-1 Region. We are continuing to closely monitor the health and to continue identifying the specific traffic flows that were leading to congestion within these devices. This is complex, as the issue is not simply the volume of traffic, but rather the rate of new connections that is causing unexpectedly large load on the impacted devices. We expect to see continued improvement in service availability and are monitoring for full recovery.
Dec 7, 14:33 PST

Update - Update: AWS have identified that an increase in traffic between specific internal services is causing congestion within several network devices in the US-EAST-1 Region. While we continue to work across every service to investigate and mitigate impact, we are focusing our efforts on a specific mitigation for this traffic increase. We are taking action over the next 30-60 minutes that we expect will put us on the path to recovery, however we do not have an ETA for full recovery yet.
Dec 7, 13:45 PST

Update - Update: We are working closely with our infrastructure vendor AWS on resolving the widespread network outage in us-east-1. While we are still seeing incremental recovery, it is not consistent and we do not have an ETA for full recovery. All teams are actively engaged and working on resolving this impact as quickly as possible.
Dec 7, 12:06 PST