s3

1# AWS S3
2 
3Amazon Simple Storage Service (S3) provides scalable object storage with industry-leading durability (99.999999999%). S3 is fundamental to AWS—used for data lakes, backups, static websites, and as storage for many other AWS services.
4 
5## Table of Contents
6 
7- [Core Concepts](#core-concepts)
8- [Common Patterns](#common-patterns)
9- [CLI Reference](#cli-reference)
10- [Best Practices](#best-practices)
11- [Troubleshooting](#troubleshooting)
12- [References](#references)
13 
14## Core Concepts
15 
16### Buckets
17 
18Containers for objects. Bucket names are globally unique across all AWS accounts.
19 
20### Objects
21 
22Files stored in S3, consisting of data, metadata, and a unique key (path). Maximum size: 5 TB.
23 
24### Storage Classes
25 
26| Class | Use Case | Durability | Availability |
27|-------|----------|------------|--------------|
28| Standard | Frequently accessed | 99.999999999% | 99.99% |
29| Intelligent-Tiering | Unknown access patterns | 99.999999999% | 99.9% |
30| Standard-IA | Infrequent access | 99.999999999% | 99.9% |
31| Glacier Instant | Archive with instant retrieval | 99.999999999% | 99.9% |
32| Glacier Flexible | Archive (minutes to hours) | 99.999999999% | 99.99% |
33| Glacier Deep Archive | Long-term archive | 99.999999999% | 99.99% |
34 
35### Versioning
36 
37Keeps multiple versions of an object. Essential for data protection and recovery.
38 
39## Common Patterns
40 
41### Create a Bucket with Best Practices
42 
43**AWS CLI:**
44 
45```bash
46# Create bucket (us-east-1 doesn't need LocationConstraint)
47…