Blog

Practical, specific guides to the AWS waste CostLens's own checks look for - written so they're useful even if you never connect an account.

How to Find and Delete Idle NAT Gateways on AWS

A NAT Gateway bills hourly whether or not anything is actually routing through it. Here's how to find the idle ones yourself, and what to check before deleting one.

The Hidden Cost of Unattached EBS Volumes (and How to Clean Them Up Safely)

Every terminated EC2 instance can leave its EBS volumes behind, still billing. A manual walkthrough for finding them and the one thing to check before you delete anything.

AWS Compute Optimizer vs. Manual Rightsizing: What It Catches and What It Misses

Compute Optimizer is free and genuinely good at rightsizing. It's also not the whole picture. Here's exactly where its blind spots are.