AWS Billing Bug Sent False Cost Alerts to Slack and PagerDuty

A pricing bug in AWS estimated billing inflated projected charges into the billions, triggering false budget alerts through automated cost-monitoring tools connected to Slack and PagerDuty. AWS confirmed actual charges were unaffected and paused estimate updates while reverting to correct data. The error lasted up to 24 hours, leaving FinOps teams without reliable cost data mid-incident.