A media firm is using Convertible Reserved Instance for its web application. To get Reserved Instance cost details, you are currently using Detailed Billing Report. The Senior Management wants some changes in the Detailed Billing Report. So you are planning to migrate to AWS Cost & Usage Report. Which of the following is a key differentiator for AWS Cost & Usage Report?

Answer options:

A.Single file with a fixed list of columns.
B.Multiple files with flexible column structure.
C.Single file with flexible column structure.
D.Multiple files with a fixed list of columns.

Correct Answer – B
Cost & Usage report provides comprehensive cost details for all resources in AWS. Also, with the Cost & Usage report, we can have customized reports. Cost & Usage reports can have multiple files which consist of data files for usage, separate files for discounts, if any & a manifest file listing data files in a report. Columns in Cost & Usage Reports can be added or removed based upon customer requirements.
Option A is incorrect as in the case of Cost and Usage reports, multiple files are uploaded in the S3 bucket. Users also can add or delete columns as required from the reports. There is no fixed list of columns associated with Cost and Usage reports which is a case with the Detailed Billing Report.
Option C is incorrect as in the case of Cost and Usage reports, multiple files are uploaded in the S3 bucket.
Option D is incorrect as there is no fixed list of columns associated with Cost and Usage reports which is the case with the Detailed Billing Report. Users can add or delete columns as required from the Cost and Usage reports.
For more information on migrating to Cost and Usage reports, refer to the following URL-
https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/migrate-dbr-cur.html