EBS & EFS

The mental model behind block storage (EBS) and a shared POSIX filesystem (EFS), how each is provisioned from the SDK, and why mounting is an OS job, not an API call.

Create, inspect, and attach an EBS volume, and create an EFS file system with a mount target, in boto3 and AWS SDK v3 - the everyday storage-provisioning calls.

Choosing EBS volume types (gp3, io2, st1), automating point-in-time snapshots, restoring volumes from snapshots, and encrypting at rest with KMS - in boto3 and AWS SDK v3.

Cut EFS cost with lifecycle policies that tier cold files to Infrequent Access and Archive, and pick the right PerformanceMode and ThroughputMode - in boto3 and AWS SDK v3.

A checklist for safe, cost-aware EBS and EFS use from the SDK - encryption defaults, snapshot cadence, elastic sizing, mount-target and access-point hygiene, lifecycle tiering, and operations - across boto3 and AWS SDK v3.