Storage system that manages data as objects (files with metadata) rather than traditional file systems. Like a massive digital warehouse where each item has its own unique ID and description.
Amazon S3 is object storage perfect for storing photos, videos, and backups where you access files by their unique ID rather than folder paths.
All four are managed object storage services for storing and retrieving unstructured data (objects) via APIs/HTTP. They provide buckets/containers, metadata, access control, lifecycle policies, and multiple storage classes for cost vs. access frequency trade-offs.