Check the full article for a fascinating snapshot of “reliability”
Computing services built for Internet scale have been pioneered by Amazon, too. It offers to other businesses Amazon Web Services, almost two dozen discrete categories of services, such as computing cycles or database software running on Amazon’s machines. These are the same behind-the-scenes computing services that the company uses to run Amazon.com.
One of those services, the Simple Storage Service, or S3, allows companies to store data on Amazon’s servers. “We talk of ‘durability’ of data — it’s designed for Eleven-9s durability,” says James Hamilton, a vice president for Amazon Web Services. That works out to a 0.000000001 percent chance of data being lost, at least theoretically.