Amazon outage over: back up after 15 minute outage, the world's largest online retailer, went dark for about 15 minutes on Monday in a rare outage for many users across the United States and Canada.

Scott Sady/AP/File
An employee grabs boxes off the conveyor belt at Amazon's Fernley, Nev., warehouse, in this 2008 file photo. went dark for about 15 minutes on Monday, August 19, 2013. The company has not commented on the outage.

The outage lasted for about 15 minutes on Monday for many users across the United States and Canada.

It was unclear what triggered the rare disruption of the world's largest online retailer. The company offers Amazon Web Services to ramp up server capacity for customers to prevent outages exactly like this. did not respond to multiple requests for comment.

Earlier on Monday, users from New York and Toronto to San Francisco got only error messages when trying to access the popular shopping website. The news came less than a week after the website of the New York Times went down for about two hours.

Amazon has $86 billion in annual gross merchandise volume, including its business through third-party sellers, according to consultants at RetailNet Group. Going by that estimate, Amazon processes some $163,622 in transactions per minute on average, suggesting that the brief outage cost Amazon about $2.5 million.

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