Blob Storage is a cloud storage model designed to hold large amounts of unstructured data as individual objects, commonly called blobs. Instead of organizing files in a traditional folder-and-file hierarchy, it stores each object with its data, metadata, and a unique identifier within a storage container or bucket. This structure makes blob storage well suited to data that does not require frequent modification.
Organizations use Blob Storage for images, videos, backups, documents, application logs, datasets, and other large files. Cloud platforms can automatically scale storage capacity as data volumes grow, while access controls, lifecycle policies, replication, and tiered storage help manage cost and availability. Blob Storage is also frequently used as the foundation for data lakes and cloud-based analytics pipelines.