Amazon S3¶

• Amazon S3 is one of the main building blocks of AWS
• It's advertised as "infinitely scaling" storage

• It's widely popular

• Many websites use AWS S3 as a backbone

• Many AWS services uses AWS S3 as an integration as well

• S3 is a key/value store for objects

• Great for big objects, not so great for small objects
• Serverless, scales infinitely, max object size is 5TB
• [[Eventual consistency]] for overwrites and deletes
• Tiers: S3 Standard Tier (General Purpose), S3 Standard-Infrequent Access (IA) Tier, S3 One Zone-Infrequent Access (IA) Tier, S3 Glacier for backups
• Security: IAM, [[bucket policy]], [[ACL]]
• Encryption: SSE-S3, SSE-KMS, SSE-C, S3 Client Side Encryption, [[SSL in transit]]

Use case: static files, key value store for big files, website hosting.