B , there is not admin effort for bringing it back

Daily and Monthly Snapshots: Keeping daily snapshots in the EBS snapshot standard tier for 1 month ensures that recent backups are readily available for quick recovery. Incremental Snapshots: Using incremental snapshots reduces storage costs by only capturing and storing the changes made since the last snapshot. This approach minimizes the amount of data transferred and stored, optimizing costs while ensuring that backup data is up to date. Minimal Administrative Effort: This solution requires minimal administrative effort as it leverages existing EBS snapshot functionality and does not require manual intervention to move snapshots to other storage classes or manage additional backup policies.

it's not possibile to automate the moving from ebs to ebs archive so i'll go with A, that also cost less

https://docs.aws.amazon.com/ebs/latest/userguide/snapshot-archive.html

How much does EBS snapshots archive cost? Pricing and billing. Archived snapshots are billed at a rate of $0.0125 per GB-month. For example, if you archive a 100 GiB snapshot, you are billed $1.25 (100 GiB * $0.0125) per month. What is the cost of Glacier? Even though uploading data to Amazon S3 Glacier is free, there is a pricing method for upload requests, which is $0.03 per 1,000 requests. Transferring data out of S3 Glacier to the same region is free; however, there is a cost for transferring data to a different region. • $0.0036 per GB / Month

By default, when you create a snapshot, it is stored in the Amazon EBS Snapshot Standard tier (standard tier). Snapshots stored in the standard tier are incremental. This means that only the blocks on the volume that have changed after your most recent snapshot are saved. Some typical use cases include: Archiving the only snapshot of a volume, such as end-of-project snapshots Archiving full, point-in-time incremental snapshots for compliance reasons. Archiving monthly, quarterly, or yearly incremental snapshots. https://docs.aws.amazon.com/ebs/latest/userguide/ snapshot-archive.html

Maybe B? https://repost.aws/knowledge-center/ebs-copy-snapshot-data-s3-create-volume

i know S3 Glacier Deep is much cheaper than S3 Standard IA in optionD but A also says Copy, not move. does it mean it will still keep a copy on the snapshot on EBS? i forgot to vote D

i know S3 Glacier Deep is much cheaper than S3 Standard IA in optionD but A also says Copy, not move. does it mean it will still keep a copy on the snapshot on EBS?