Debugging Hidden AWS Costs: From “Others” in Cost Explorer to a Real Root Cause

I had an AWS account that was supposed to be almost empty. Most of the resources had already been deleted. Some cleanup had been done manually, and some of it had been done through tools like Terraform. So the expectation was simple: No active resources = no meaningful cost But Cost Explorer was still showing small charges. The amount was tiny, around a few fractions of a cent, but the problem was not the amount itself. The problem was that the charge was unclear. In the AWS Cost Explorer UI, pa