Blob/storage container security role needed to "add" a blob/container

Hi Richard Taylor,
Welcome to Microsoft Q&A Forum, thank you for posting your query here!
To allow a user to create and manage Azure storage containers and blobs in the Azure portal, you can assign them the Storage Blob Data Contributor role. This role provides the necessary permissions to read, write, and delete blob data within Azure Storage containers.

The key permissions included in the Storage Blob Data Contributor role:

• Read: Allows reading of blob data.
• Write: Allows writing and updating of blob data.
• Delete: Allows deletion of blob data.

If you need the user to manage the storage account itself (e.g., creating and deleting containers), you might consider the Storage Account Contributor role, which includes broader permissions.
For more detailed information, you can refer to the Azure documentation:
https://video2.skills-academy.com/en-us/azure/role-based-access-control/built-in-roles/storage
https://video2.skills-academy.com/en-us/azure/storage/blobs/blob-containers-portal

If you have any other questions or are still running into more issues, let me know in the "comments" and I would be happy to help you

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