Amazon, which rents Web services and storage to companies, posted a nearly 5,700-word report on its website describing the causes of last week's glitch that took down a slew of websites. The company explained a network configuration change caused the shutdown and described what it is planning to do to prevent similar technical problems from happening again.
Amazon said it will provide a 10-day service credit to customers who were affected by the outage that will be automatically applied to their accounts. "We want to apologize," Amazon said on its website. "We know how critical our services are to our customers' businesses and we will do everything we can to learn from this event and use it to drive improvement across our services."
The company was widely scrutinized for last week's outage, which began April 21 and lingered for several days. High-profile start-ups such as Foursquare, Quora and Reddit cited service problems related to the outage. Amazon said the primary outage occurred in a data center in northern Virginia when a configuration change to shift traffic was performed incorrectly. The network change was part of a normal scaling activity and was intended to upgrade capacity of the primary network in the data center.
"Unlike a normal network interruption, this change disconnected both the primary and secondary network simultaneously, leaving the affected nodes completely isolated from one another," Amazon said.
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