Several Amazon Web Services customers were in for a shock on Friday morning when they logged into their accounts and found billing estimates suggesting they owed staggering amounts — in some cases billions of dollars — for cloud services they had never actually used.
Amazon has since confirmed that a bug in its AWS billing portal is to blame, and the company is actively working to resolve the issue. The inflated figures, while alarming, do not represent real charges, according to the company.
What Went Wrong with the Billing System
In an update posted to its AWS status page, Amazon said it first detected inaccurate billing data late on Thursday. The company attempted to roll back a recent change to its billing computation subsystem, but that rollback failed to fix the problem.
By Friday morning, Amazon acknowledged that the issue was still ongoing and that the rollback had not resolved it. The company did not provide a detailed technical explanation of what caused the subsystem to generate such wildly incorrect figures.
Customers Share Shocking Billing Estimates
Frustrated and bewildered customers took to Reddit to share screenshots of the erroneous charges. One user posted a billing estimate approaching $2.5 billion for the current month's AWS usage. Others reported similar alerts, with amounts ranging from several million dollars to hundreds of millions.
Despite the eye-watering numbers, Amazon sought to reassure affected customers. The company stated clearly that the displayed billing estimates "do not reflect actual usage and charges," meaning customers are not on the hook for the inflated amounts.
Amazon's Response and Ongoing Investigation
When contacted by email, Amazon spokesperson Aisha Johnson directed inquiries to the company's status page and declined to provide further comment. She did not answer questions about the nature of the bug or its root cause.