AWS Backup is configured to snapshot a single EC2 instance that has one EBS volume. Snapshot 1 captures 10 GiB of data. Snapshot 2 occurs later when 4 GiB of the volume's data has changed. Snapshot 3 happens after an additional 2 GiB of new data is written, bringing the volume to 12 GiB total. How much snapshot storage will be required in total to store all three snapshots?

EBS snapshots are incremental, meaning only the changed blocks since the last snapshot are stored. Snapshot 1 stores the full 10 GiB. Snapshot 2 stores only the 4 GiB of changed data. Snapshot 3 stores the additional 2 GiB of new data. Therefore, the total storage required is the sum of the initial snapshot and the incremental changes: 10 GiB (Snapshot 1) + 4 GiB (Snapshot 2) + 2 GiB (Snapshot 3) = 16 GiB. 12 GiB is incorrect as it only represents the final volume size. 26 GiB and 32 GiB are incorrect because they assume full copies of the volume are stored for each snapshot, which is not how EBS snapshots work.