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You might as well know exactly what you're paying for, broken down by service, account, and region — right inside Last9 where the rest of your observability lives.\n\nThis repo ships two integrations. Pick one — **never both**. Running both simultaneously double-counts every dollar.\n\n## aws-cost-explorer — start here\n\nNo S3 bucket. No CUR setup. No waiting 24 hours for data.\n\nOne CloudFormation stack. One parameter. Done.\n\n```\nUpload cloudformation.yaml → fill in your Last9 token → Create stack\n```\n\nA Lambda runs in your AWS account every day, calls the Cost Explorer API, and sends `aws.cost.unblended` and `aws.cost.amortized` to Last9. That's it. No servers. No credentials lying around. $0/month to run.\n\n→ [aws-cost-explorer/](./aws-cost-explorer/)\n\n## aws-cur — when you need more\n\nIf you want cost broken down by individual EC2 instance, S3 bucket, or custom team/environment tags, you need the Cost and Usage Report. It's more setup (enable CUR, wait 24h for first data, point it at S3), but it gives you line-item granularity that Cost Explorer can't.\n\n→ [aws-cur/](./aws-cur/)\n\n## Metrics\n\nBoth integrations send the same core metrics to Last9:\n\n| Metric | What it tells you |\n|---|---|\n| `aws.cost.unblended` | What AWS actually charged, per service per day |\n| `aws.cost.amortized` | Same, but with RI and Savings Plan costs spread across usage (the honest number) |\n\nQuery `aws.cost.unblended` in Last9, group by `aws.service`. That's your cost dashboard.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flast9%2Faws-cost-reporter","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flast9%2Faws-cost-reporter","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flast9%2Faws-cost-reporter/lists"}