"Thursday's crash happened at Amazon's northern Virginia data center, located in one of its East Coast availability zones. In its status log, Amazon said that a 'networking event' caused a domino effect across other availability zones in that region, in which many of its storage volumes created new backups of themselves. That filled up Amazon's available storage capacity and prevented some sites from accessing their data.
Amazon didn't say what that 'networking event' was."
All I have to say to that is "oopsie", or should that be "giant beyond all comprehension how Amazon could have let that happen oopsie"?