WORM (Write Once, Read Many) is a common business requirement for various industries such as ISVs, financial or healthcare. This post provides an overview of how to use Azure Storage to meet these mission-critical requirements.

What is Azure Storage WORM?
Azure Storage WORM (Write Once, Read Many) is a feature that allows customers to store data in an immutable form. This means that once data is written to a blob in a storage account, it cannot be modified or deleted. Azure Storage WORM is available in all public regions and is supported for Blob storage accounts.What are the Benefits of Azure Storage WORM?
Azure Storage WORM provides customers with the ability to store data in an immutable form, providing a secure and reliable way to store data. This feature helps customers meet their compliance and regulatory requirements, such as GDPR, HIPAA, and SOX. Additionally, WORM can help customers protect their data from malicious actors by preventing data from being modified or deleted.How to Enable Azure Storage WORM?
Azure Storage WORM is enabled through the use of Access Control Lists (ACLs). Customers can use ACLs to set the “immutable” flag on any blob in their storage account. Once the flag is set, the blob cannot be modified or deleted.Conclusion
Azure Storage WORM is a powerful feature that allows customers to store data in an immutable form. This feature helps customers meet their compliance and regulatory requirements, as well as protect their data from malicious actors. To enable WORM, customers can use Access Control Lists to set the “immutable” flag on any blob in their storage account.“Azure Storage WORM provides customers with the ability to store data in an immutable form, providing a secure and reliable way to store data.”
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From the Core Infrastructure and Security Blog