Azure Daily 2022 by Gordon

General availability (update): Improved Append Capability on Immutable Storage for Blob Storage

Immutable storage for Blob Storage on containers (which has been generally available since September 2018) now includes a new append capability. This capability, titled “Allow Protected Appends for Block and Append Blobs,” allows you to set up immutable policies for block and append blobs to keep already written data in a WORM state and continue to add new data. This capability is available for both legal holds and time-based retention policies.

Diagram showing how retention policies and legal holds prevent write and delete operations

This capability is supported in all public regions and it is available to new and existing accounts. To learn more, read the documentation on immutable storage.

Source: General availability (update): Improved Append Capability on Immutable Storage for Blob Storage