SAA-C03 - Design Cost-Optimized Architectures - Section 4.2

Optimise the cost of block, file and backup storage by right-sizing EBS volumes and managing snapshots and backups.

Right-size EBS volumes by matching volume type and provisioned capacity to actual workload IOPS and throughput, and use incremental EBS snapshots that charge only for changed blocks. Reduce EFS costs with the EFS Infrequent Access storage class for files not accessed recently, and centralise backups across services with AWS Backup to enforce retention policies and control cost.

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