Thanks to Brad Chapman for catching and excerpting this; please discuss on his thread in -discuss. """ It looks like the "Post-Event Summary" for this outage has been published. I've excerpted the one-sentence root cause analysis (emphasis mine): https://aws.amazon.com/message/101925/ The root cause of this issue was a latent race condition in the DynamoDB DNS management system that resulted in an incorrect empty DNS record for the service’s regional endpoint (dynamodb.us-east-1.amazonaws.com) that the automation failed to repair. """ Cheers, -- jra -- Jay R. Ashworth Baylink jra@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274