Your company has started hosting its data store on AWS by using the Simple Storage service. They are storing files that are downloaded by users frequently. After 3 months, the files need to be transferred to archive storage since they are not used beyond this point. Which of the following could be used to manage this requirement effectively?

Answer options:

A.Transfer the files via scripts from S3 to Glacier after a period of 3 months.
B.Use Lifecycle policies to transfer the files onto Glacier after a period of 3 months.
C.Use Lifecycle policies to transfer the files onto Cold HDD after a period of 3 months.
D.Create a snapshot of the files in S3 after a period of 3 months.

Answer - B
The AWS Documentation mentions the following.
To manage your objects so that they are stored cost-effectively throughout their lifecycle, you need to configure their lifecycle. A lifecycle configuration is a set of rules that define actions that Amazon S3 applies to a group of objects. There are two types of actions:
Transition actions—Define when objects transition to another storage class. For example, you might choose to transition objects to the STANDARD_IA storage class 30 days after you created them or archive objects to the GLACIER storage class one year after creating them.
Expiration actions—Define when objects expire. Amazon S3 deletes expired objects on your behalf. The lifecycle expiration costs depend on when you choose to expire objects.
Option A is invalid since there is already the option of lifecycle policies.
Option C is invalid since lifecycle policies are used to transfer to Glacier or S3-Infrequent Access.
Option D is invalid since snapshots are used for EBS volumes.
For more information on S3 lifecycle policies, please visit the below URL-
https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.html