Five overlooked AWS cost drains quietly inflating your cloud bill every month

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Cloud engineers frequently overlook small, recurring AWS charges that accumulate silently over months or years, according to a cost-cleanup guide published on DEV Community. The most common culprits include unattached EBS volumes left behind after instance termination, non-production servers running around the clock at full production specs, and NAT gateway traffic that was never rerouted after a debug session. Forgotten Lambda functions and EventBridge rules from retired projects, along with oversized RDS instances and unattached Elastic IPs, also contribute to bill creep outside normal monitoring. The guide recommends periodic audits using Cost Explorer, Trusted Advisor idle checks, and VPC flow logs to identify and safely remove these unused resources.

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