Key points

• Blob Storage stores objects by key and supports access tiers, lifecycle rules, versioning, redundancy, and immutability.
• Access frequency, recovery, retention, region, and write-protection requirements drive these independent controls.

Best-known use cases

• Store images, exports, or lake objects that do not require mounted file-system semantics.

What candidates often confuse it with

• Blob Storage provides object access; Azure Files provides managed SMB or NFS shares and Data Lake Storage adds analytical namespace semantics.

Key takeaway

Choose Blob Storage for durable object data with an explicit tiering, protection, and redundancy design.

Relevant exam tasks

• D2.2.S2 — Recommend a solution for storing unstructured data
• D2.2.S3 — Recommend a data storage solution to balance features, performance, and costs
• D2.2.S4 — Recommend a data solution for protection and durability
• D3.1.S4 — Recommend a backup and recovery solution for unstructured data
• D3.2.S3 — Recommend a high availability solution for semi-structured and unstructured data

Learn more

• Introduction to Azure Storage