AWS had an identical failure with their ATS(automatic transfer switch) system which took out an availability zone. After some forensics and a code review of th

AWS had an identical failure with their ATS(automatic transfer switch) system which took out an availability zone. After some forensics and a code review of the plc software, realized it was an omission in that system. They now make their own if I remember correctly. https://image.slidesharecdn.com/cpn208failuresatscale-121129215220-phpapp01/95/cpn208-failures-at-scale-how-to-ride-through-them-aws-re-invent-2012-19-638.jpg?cb=1434493281 https://image.slidesharecdn.com/cpn208failuresatscale-121129...