Some Amazon Web Services customers discovered on Friday that their estimated bills showed they owed billions of dollars for services they had not actually used.
Amazon.com confirmed on Friday that it was working to resolve a problem within its AWS billing portal. The glitch caused certain customers to be shown estimated charges in the millions or even billions of dollars for cloud computing services.
In an update on its status page, the company stated that anomalous billing data had been detected starting late Thursday. By Friday morning, it acknowledged that "rolling back recent changes did not resolve the issue," noting that the changes involved a subsystem for calculating bills.
The positive aspect is that customers who were shown "owing" millions or billions are unlikely to be responsible for these charges. Amazon indicated that the bill estimates "do not reflect actual usage or charges."
According to screenshots posted by Amazon customers on Reddit, one user's estimated monthly AWS usage bill approached $2.5 billion, while other customers received similar alerts with figures ranging from millions to hundreds of millions of dollars.
An Amazon spokesperson did not immediately respond to a request for comment. The company's status page indicated the issue was expected to persist for several more hours.
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