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Before you begin, ensure you have:
  • CUR 2.0 configured in your AWS account
  • Parquet format (strongly recommended)
  • Hourly or daily export frequency
  • Optional: EKS/ECS tags for granular attribution

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What You Provide

IAM Role ARN

Federated role for secure access

S3 Bucket

Bucket containing your CUR exports

CUR 2.0 Name

Name of your Cost and Usage Report

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Setup Steps

1

Choose setup method

Use our CloudFormation template for automated setup, or configure manually.
2

Configure CUR 2.0

Ensure your Cost and Usage Report is set up with the recommended settings.
3

Grant Role access

Create an IAM role with read permissions to your S3 bucket and provide the ARN.
4

Create AWS datasource in Costory

Navigate to Settings → Data Sources → Add New and select AWS.
5

Enter Role ARN and S3 info

Provide the IAM Role ARN, S3 bucket name, and CUR 2.0 name.
6

Request backfill

AWS can backfill up to 12 months of historical data.

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FAQ

Strongly recommended. Parquet provides better performance and lower storage costs.
No, CUR does not need to live in the master payer account.
Yes — overwrite is preferred for cleaner data management.
Approximately 24 hours after setup completion.
AWS can backfill up to 12 months of historical CUR data.

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Next Steps

Add Usage Metrics

Connect usage data to explain cost changes.

Connect Events

Link engineering events for correlation.