A software bug in AWS's billing system caused wildly inflated cost estimates to be displayed in the Cost Explorer console, with some users receiving estimates in the billions or even trillions of dollars despite negligible actual usage. AWS confirmed the figures were inaccurate and did not reflect real charges, pausing further estimate updates while investigating the issue. The company identified and mitigated the root cause and expected corrected billing figures to be restored for all customers by noon Pacific time on Saturday, July 18.
