Is creating a lock on an Azure Storage account sufficient to revoke all access?

Creating a lock on an Azure Storage account is not sufficient to revoke all access, which is why the correct answer is that it does not achieve this purpose. Locks in Azure primarily serve to protect resources from accidental deletion or modification. There are two types of locks: CanNotDelete and ReadOnly.

While a CanNotDelete lock prevents the deletion of a resource, and a ReadOnly lock restricts modifications to the resource, neither type of lock directly revokes access rights or permissions for users or applications that already have been granted access to the storage account.

Access to a storage account is controlled through role-based access control (RBAC) and access policies that specify who can perform what actions on that resource. Thus, even if a lock is applied, if a user or service principal has been granted access permissions, they will still be able to interact with the storage resources according to their assigned roles.

Revoking access requires modifying those permissions directly by either removing access roles from users or groups or by disabling access keys and shared access signatures, which ensures that no one can access the storage account until explicitly re-enabled. This highlights the importance of understanding Azure's security measures, such as RBAC and access management, as locks serve a different purpose and do not