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  1. Store your metrics parquet files in S3.
  2. Create an IAM role with read-only S3 access and a web identity trust for Costory.
  3. In Costory, go to Metrics > Import new metrics datasource > Parquet file (AWS S3).
  4. Provide the bucket name, prefix, role ARN, and configure metric definitions (value column, date column, aggregation, gap-filling, dimensions, unit).
Last modified on March 18, 2026