What could be causing this?
(Choose two.)
Amazon Elastic Block Store (Amazon EBS) storage charges
Operating system charges
Hardware charges
Elastic IP charges
Input/output (I/O) charges
Explanations:
Even if EC2 instances are stopped, charges for EBS volumes (storage) are incurred since they remain allocated.
There are no operating system charges; customers pay only for the EC2 instances and associated resources.
There are no hardware charges directly; users pay for the instances and associated services, not for the hardware itself.
If an Elastic IP is allocated to a stopped instance, charges apply for the Elastic IP even if the instance is not running.
I/O charges apply only when data is processed or transferred; stopped instances do not incur these charges.