Object store optimized for storing large amounts of unstructured (text and binary) data
It is a Highly Durable Service (11 nines, up to 16 nines)
It is at the core of most of Azure Services where storage is required

Can be accessed over HTTP and NFS 3.0
Supports up to 5PB of storage and can be increased to 190PB on request

It is not suited for storing structured data that need to be queried frequently
Has higher latency when compared with memory and disk based storage
It also lacks the any form of indexing
It is an distributed storage (can span multiple machines)

All the data in Blob Storage is stored in a flat hierarchy (No folders/ directory)
To access data from Blob we either have to fetch a specific file using the URI or fetch all the data in the container

Use Cases : Storing Files, Streaming video and audio, Serving images/ documents

Public Access Level

Private: No anonymous access
Blob: Anonymous Read Access
Container: Anonymous Read & Container Listing Access