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

Features

Amazon S3 Storage Classes

Amazon S3 Standard is the default class.

Amazon S3 Intelligent-Tiering (Sep 2021)^[1]

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

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)