Object storage systems allow retention of massive amounts of unstructured data in which data is written once and read once (or many times). One of the limitations with object storage is that it is not intended for transactional data.

Blob storage is opposed to other storage architectures like file systems, which manage data as a file hierarchy, and block storage, which manages data as blocks within sectors and tracks. Each object is associated with a globally unique identifier.

https://en.wikipedia.org/wiki/Object_storage