After reviewing the last quarter’s monthly bills, management has noticed an increase in the overall bill from AWS. After researching this increase in cost, you discovered that some new services and users are doing many GET Bucket API calls to Amazon S3. Your boss has asked you to come up with a new cost-effective way to reduce the number of these new GET Bucket API calls. What process should you use to help mitigate the cost?

Answer options:

A.Enable versioning on S3 and delete previous versions of objects that you do not need.
B.Create a lifecycle policy to migrate the S3 objects to Glacier.
C.Prevent unauthorized access or limit public access to your bucket using bucket policies.
D.Upload all files to an ElastiCache file cache server, update your new services to now read all the files from the ElastiCache file cache server, and configure the ElastiCache policies to push all files to Amazon S3 for long-term storage.

Answer – C
Option A is INCORRECT because this does not reduce the number of GET Bucket API calls to Amazon S3.
Option B is INCORRECT because this method may impact the service if the S3 objects are moved to Glacier.
Option C is CORRECT because bucket policies can limit unauthorized access to reduce the number of API calls to S3.
Option D is INCORRECT because uploading all files to Elastic Cache is not an ideal solution.
For more information on how to reduce the S3 cost, please refer to the below link:
https://aws.amazon.com/premiumsupport/knowledge-center/s3-reduce-costs/