
AWS Lambda function automatically identifies and removes unassociated Elastic IPs across all regions to eliminate idle address charges and optimize costs.


<div><p>This article explains how to identify and remove unassociated Elastic IPs (EIPs) to reduce AWS costs, as AWS charges hourly for unused EIPs.</p><ul><li>Unassociated EIPs incur hourly charges visible as "ElasticIP:IdleAddress" on AWS bills</li><li>AWS Lambda function searches all regions for unassociated EIPs and documents them in CSV</li><li>CloudFormation template deploys Lambda, IAM role, and S3 bucket for the solution</li><li>Lambda function can operate in review mode or automatically release unassociated EIPs</li><li>Solution costs minimal; example: 400 EIPs across 4 regions costs less than 1 cent</li><li>CSV report uploaded to S3 for review before deletion</li><li>Can be scheduled periodically using Amazon EventBridge for ongoing optimization</li></ul><p>This solution automates discovery and cleanup of unused Elastic IPs across AWS regions, helping optimize cloud costs with minimal effort and expense.</p></div>


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