A company's finance department wants to receive a monthly report showing AWS resource usage by department. Which solution should be used to meet the requirements?
A.
Configure AWS Cost and Usage reports for each department. Run the reports monthly.
B.
Schedule a monthly report for each department using AWS Budgets.
C.
Run a monthly AWS CloudTrail report of resource usage by tag using department codes.
D.
Tag all resources with department codes. Generate a monthly cost allocation report.
A is good.
Besides resource tag, it seems that we can use accounts, servers... as dimension for custom categories and create Cost and Usage reports.
https://aws.amazon.com/aws-cost-management/aws-cost-categories/
You can create custom categories and map your cost and usage information into these categories based on the rules defined by you using various dimensions such as account, tag, service, charge type, and even other cost categories. Once cost categories are set up and enabled, you will be able to view your cost and usage information by these categories starting at the beginning of the month in AWS Cost Explorer, AWS Budgets, and AWS Cost and Usage Report (CUR).
tagging resources and generating a monthly cost allocation report, is the most efficient and practical way to meet the requirement of providing AWS resource usage reports by department.
A is good.
Best practice to use tagging when resources are created. D is not the best because you cannot start tagging all the resources when you need to generate the report.
Important: The Monthly Cost Allocation Report feature will be unavailable at a later date. We strongly recommend that you use the AWS Cost and Usage Reports instead.
https://docs.aws.amazon.com/cur/latest/userguide/monthly-cost-allocation.html
Shall it be A, by using AWS Cost and Usage reports?
I am going for D as well. To know departmental spending you need to tag all the departments first before running a cost and usage report monthly to know who is spending what.
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