What Is Object Storage? A Plain-English Guide Object storage is a data storage architecture that manages information as discrete objects—each bundling data, metadata, and a unique identifier—rather than as files in folders or blocks on disks. It scales to billions of items and is the foundation of Amazon S3 and most modern cloud storage. If you have ever uploaded a file to AWS S3, you have already used object storage without thinking about the plumbing underneath. Key Stats ...