Amazon Simple Storage Service (S3)

wikipedia:Amazon S3 (March 2006) or Amazon Simple Storage Service a service offered by Amazon Web Services (AWS) since 2006 that provides Object Storage through a web service interface or CLI.

• AWS free tier: 5 GB and 20,000 GET Requests per month

Features

• Encryption
• Replication
• Lifecycle: aws s3control put-bucket-lifecycle-configuration
• Versioning: aws s3api put-bucket-versioning
• Object tagging
• Logging
• Event notifications (2014)

Amazon S3 Storage Classes

• Amazon S3 Standard is the default class.

• Amazon S3 Intelligent-Tiering (Sep 2021)

• Amazon S3 Standard Infrequent Access (IA) is designed for less frequently accessed data. Typical use cases are backup and disaster recovery solutions.

• Amazon S3 One Zone-Infrequent Access is designed for data that is not often needed but when required, needs to be accessed rapidly. Data is stored in one zone and if that zone is destroyed, all data is lost.

• Amazon Glacier is designed for long-term storage of data that is infrequently accessed and where retrieval latency of minutes or hours is acceptable. "Glacier Deep Archive" is an alternative with a retrieval time of at least 12 hours, but 1/4th the price. It is intended as an alternative to magnetic tape libraries, and is designed for long term retention of data for 7 to 10 years.

• Amazon S3 Express One Zone (Nov 2023): Directory buckets

Pricing/Cost

• 1 TB S3 One Zone-IA storage (us-east-2), no data transfer: ($10.24 USD/month )
• 1 TB S3 One Zone-IA storage (eu-central-1), no data transfer: $11.06/month (Calculator)
• 1 TB S3 Glacier Deep Archive storage, no data transfer: $1/month (Calculator)

Commands

See also: AWS Command Line Tool (CLI)

• aws s3 cp
• aws s3 sync
• aws s3 rm
• aws s3 help
• aws s3 mb (creates a bucket)
• aws s3 rb
• aws s3 presign

https://docs.aws.amazon.com/cli/latest/reference/s3/

Amazon S3 logs

Amazon S3 allows users to enable or disable logging. If enabled, the logs are stored in Amazon S3 buckets which can then be analyzed. These logs contain useful information such as:

• Date and time of access to requested content
• Protocol used (HTTP, FTP, etc.)
• HTTP status codes
• Turnaround time
• HTTP request message

Encryption

Encryption (2017) is supported in AWS S3 (default Advanced Encryption Standard (AES) 256bit)

• In transit (SSL/TLS)
• At rest:
  • Server Side Encryption (SSE):
  • S3 Managed Keys (SSE-S3; 256bit);
  • AWS Key Management Service, Managed Keys (SSE-KMS)
  • Server Side Encryption with Customer Provided Keys (SSE-C)
• Client Side Encryption (user encypts data on their local machine and then upload to AWS S3)

Replication

• S3 Replication Time Control (S3 RTC)

News

• Jul 2025 Amazon S3 Vectors
• Aug 2024 Amazon S3 now supports conditional writes (if-none-match)
• Nov 2023 AWS S3 Directory buckets introduced
• Nov 2023 Amazon S3 now supports enabling S3 Object Lock on existing buckets
• Nov 2023 Amazon S3 server access logging now supports automatic date-based partitioning
• Jan 2023 Encryption activated by default
• Sep 2021 Amazon S3 Multi-Region Access Points
• xxx 2021 AWS PrivateLink for Amazon S3
• Nov 2020 Amazon S3 Storage Lens
• Mar 2019 AWS S3 Glacier Deep Archive
• Nov 2018 AWS Announces Amazon S3 Object Lock in all AWS Regions
• 2016 S3 Transfer Acceleration
• 2016 Amazon S3 Inventory
• Nov 2014 New Event Notifications for Amazon S3

Terraform

• Terraform resource: aws_s3_bucket
• Terraform resources: aws_s3_bucket_policy
• Terraform resource: aws_s3_bucket_website_configuration

Related terms

• Amazon EBS, Amazon EFS
• Amazon S3 clients: CloudBerry Explorer, Transmit 5, Cyberduck
• s3fs-fuse
• AWS Storage Gateway
• Amazon Glacier
• Amazon S3 Cross-Region Replication (CRR)
• PrestoDB SQL engine
• AWS: 1.4 Choose appropriate resilient storage
• Amazon Macie for S3 analysis
• Restrict access to files in Amazon S3 buckets
• AWS managed policy: AmazonS3ReadOnlyAccess
• Amazon GuardDuty S3 protection
• Amazon Athena
• BucketName:
• BucketEncryption:
• s3streamcat
• File hosting service
• Google Cloud Storage (GCS)
• s3-website
• Object lock, WORM
• Bucket keys
• S3 Express One Zone
• Azure Blob Storage: az storage blob
• AWS CLI S3 Configuration
• Turbocharge Amazon S3 with Amazon ElastiCache for Redis
• AWS Gateway endpoints for Amazon S3
• Amazon S3 Multi-Region Access Points

Limitations

• No bandwidth restriction
• No size restriction by bucket

Activities

• Read https://stackoverflow.com/questions/tagged/amazon-s3?sort=votes
• Read https://www.sumologic.com/insight/10-things-might-not-know-using-s3/
• Read How do I use CloudFront to serve a static website hosted on Amazon S3? https://aws.amazon.com/premiumsupport/knowledge-center/cloudfront-serve-static-website/
• Learn about AWS cloudtrail data events

See also

• AWS S3:aws s3control. aws s3 [ cp | ls | sync | presing | mb | rm | rb ]
• AWS S3, aws s3, aws s3api, aws s3control, s3:, Amazon S3 Storage Lens, AWS S3 replication, CRR, SSR, CAR, S3 Replication Time Control (S3 RTC), Website endpoint, Amazon Macie, Versioning, Lifecycle, Encryption, logging, Amazon S3 Inventory, Amazon S3 Batch Operations, Storage Classes, Amazon S3 clients, Terraform S3, AWS canned ACLs, Directory buckets, security, PutObject, Amazon S3 Object Lambda, Amazon S3 Vectors
• AWS storage, S3, EBS, EFS, AWS DataSync, AWS Storage costs

https://aws.amazon.com/blogs/aws/amazon-s3-intelligent-tiering-further-automating-cost-savings-for-short-lived-and-small-objects/

https://docs.aws.amazon.com/cli/latest/reference/s3/cp.html

https://docs.aws.amazon.com/cli/latest/reference/s3/mb.html

https://aws.amazon.com/about-aws/whats-new/2023/11/amazon-s3-enabling-object-lock-buckets/

https://aws.amazon.com/about-aws/whats-new/2023/11/amazon-s3-server-access-logging-date-partitioning/

https://docs.aws.amazon.com/AmazonS3/latest/userguide/default-encryption-faq.html

https://aws.amazon.com/about-aws/whats-new/2018/11/s3-object-lock/