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Storage: S3 & EBS

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Object vs. Block Storage

  • Amazon S3 (Simple Storage Service): Object storage. It stores files (objects) in flat containers called Buckets. It is accessible via the internet (HTTP/HTTPS). It is perfect for images, backups, and static websites. It scales infinitely.
  • Amazon EBS (Elastic Block Store): Block storage. It acts like a raw hard drive (virtual volume) that you attach to a running EC2 instance. It is used for operating systems and databases. It is generally not accessible via the internet directly; only the EC2 instance can see it.