s3

# AWS S3 Amazon 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. ## Table of Contents - [Core Concepts](#core-concepts) - [Common Patterns](#common-patterns) - [CLI Reference](#cli-reference) - [Best Practices](#best-practices) - [Troubleshooting](#troubleshooting) - [References](#references) ## Core Concepts ### Buckets Containers for objects. Bucket names are globally unique across all AWS accounts. ### Objects Files stored in S3, consisting of data, metadata, and a unique key (path). Maximum size: 5 TB. ### Storage Classes | Class | Use Case | Durability | Availability | |-------|----------|------------|--------------| | Standard | Frequently accessed | 99.999999999% | 99.99% | | Intelligent-Tiering | Unknown access patterns | 99.999999999% | 99.9% | | Standard-IA | Infrequent access | 99.999999999% | 99.9% | | Glacier Instant | Archive with instant retrieval | 99.999999999% | 99.9% | | Glacier Flexible | Archive (minutes to hours) | 99.999999999% | 99.99% | | Glacier Deep Archive | Long-term archive | 99.999999999% | 99.99% | ### Versioning Keeps multiple versions of an object. Essential for data protection and recovery. ## Common Patterns ### Create a Bucket with Best Practices **AWS CLI:** ```bash # Create bucket (us-east-1 doesn't need LocationConstraint) aws s3api create-bucket...