Storage
Amazon S3
Durable object storage for data addressed as objects in buckets, including files, backups, logs, data lakes, and static assets.
Key points
- S3 is object storage accessed through service APIs and related interfaces, not a block device attached to an instance.
- Storage classes trade access pattern, retrieval characteristics, and cost.
- Lifecycle policies can transition or expire objects automatically.
Best-known use cases
- Store durable objects, backups, logs, or static website assets.
- Move infrequently accessed data to a lower-cost class through lifecycle rules.
What candidates often confuse it with
- S3 is object storage; EBS is block storage for EC2 and EFS/FSx provide file systems.
- S3 Glacier classes archive S3 objects; AWS Backup centrally manages supported resource backups.
Key Cloud Practitioner takeaway
Files or data stored as durable objects point to S3; access pattern determines the storage class.
Related services
- Amazon EBS and instance store
- Amazon EFS and Amazon FSx
- AWS Storage Gateway and AWS Backup
Relevant exam tasks
- D3.6
- D4.1