Ais the correct best-practice approach:
Activate cost allocation tags inmanagement/payer account.
Enable AWS Cost and Usage Report (CUR) to dump usage to S3.
Query CUR withAmazon Athena, and visualize withAmazon QuickSight.
Other options either duplicate CURs (C, D) or misuse tools (B: CloudWatch is not a cost analysis tool).
[Reference:????https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/cost-alloc-tags.html????https://docs.aws.amazon.com/cur/latest/userguide/what-is-cur.html, , , , , ]
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