Correct Answer – D
In terms of how to use AWS tools and services to optimize the cost, refer to the whitepaper in
https://docs.aws.amazon.com/aws-technical-content/latest/cost-optimization-laying-the-foundation/reporting-cost-optimization-tools.html.
Option? ?A ?is? ?incorrect:? Because Trusted Advisor is a real-time identification of potential areas for optimization. Trusted Advisor can be regarded as a good entry point for tasks such as cost optimization:
Option B is incorrect: Because AWS Cost and Usage reports provide access to detailed billing data so that you can analyze and understand the AWS costs. It also integrates with Amazon Athena, which helps analyze the billing data using standard SQL queries.
Option C is incorrect: Because Amazon S3 Analytics is a tool to analyze and visualize theAmazon S3 storage patterns. Then a suitable storage class can be decided to save cost. The reference is in
https://docs.aws.amazon.com/AmazonS3/latest/dev/analytics-storage-class.html.
Option D is CORRECT: Although AWS Config provides an inventory of the AWS resources and how configurations have changed, it does not provide information on cost-saving. It can also be used to ensure compliance. However, it is not straightforward to provide suggestions on how to optimize costs on existing resources.