AWS S3 Storage Classes (Start to End)

1) What is Amazon S3 ? Amazon S3 (Simple Storage Service) is an AWS service used to store files like images, videos, logs, backups, datasets, and reports as objects inside buckets . Bucket = main container (like a top-level folder) Object = the actual file (data + metadata) S3 is widely used for: Data lakes Backups and disaster recovery Application logs Static website files Analytics and machine learning datasets Long-term archiving and compliance 2) Why does S3 have multiple storage classes ? Not all data is used in the same way: Some data is used daily (hot data) Some data is used sometimes (cold data) Some data is almost never used (archive data) So AWS provides different S3 storage classes to help you balance: Cost – how much you pay for storage Speed – how fast you can read data Availability – how often data is accessible Risk – multi-AZ vs single-AZ Retrieval fee – extra cost when you download data in some classes 3) Key Terms Term Simple Meaning Easy Example Durability How safe