S3 Storage Classes

S3 (Durable, immediately available and frequently accessed)

S3 – IA (durable, immediately available, infrequently accessed)

S3 Reduced Redundancy Storage (Used for data that is easily reproducible, such as thumbnails)

Core fundamentals of S3 objects

Key: Name of the object these are stored in alphabetic order

Value: The data itself

Version ID: The version of the object

Meta Data: The various attributes of the data

Sub resources

ACL: Access control lists

Torrent: bit Torrent protocol

Cross-region Replication

This basically means that if you have this turned on then for a bucket AWS will automatically make a bucket available across 2 or more regions.