“Unlock Data Security with Database-Level Column Master Keys Now Available in Public Preview for Azure SQL Database with Transparent Data Encryption”

Overview of TDE with Database-level CMK in Azure SQL Database
Background on Azure SQL Database
Azure SQL Database is a fully managed Platform as a Service (PaaS) solution for mission-critical applications that require scalability and high availability. It helps to significantly reduce operational overhead and cost and provides a secure, reliable, and highly available platform for applications and data.

Transparent Data Encryption (TDE) and Database-level CMK
Transparent Data Encryption (TDE) is a feature of Azure SQL Database that helps to protect data stored in the database by encrypting it with an encryption key. The encryption key used for TDE is called a Database Encryption Key (DEK). Database-level CMK is a new feature of Azure SQL Database that allows customers to control and manage the DEKs used for TDE.

Benefits of Database-level CMK
* Improved security: Database-level CMK provides customers with an additional layer of protection for their data by allowing them to control and manage the DEKs used for TDE.
* Increased flexibility: Database-level CMK allows customers to deploy their applications across multiple Azure regions or countries, with the assurance that the DEKs used for TDE will remain the same.
* Simplified key management: Database-level CMK provides customers with a single point of control for managing their DEKs, eliminating the need to manage individual DEKs in multiple Azure regions or countries.

How it Works
Database-level CMK works by allowing customers to define a master encryption key, called the Database Master Key (DMK). This DMK is then used to encrypt the DEKs used for TDE. This provides customers with a single point of control for managing their DEKs, eliminating the need to manage individual DEKs in multiple Azure regions or countries.

Conclusion
Database-level CMK is a powerful new feature of Azure SQL Database that provides customers with an additional layer of protection for their data. It also simplifies key management by allowing customers to define a single master encryption key, which is then used to encrypt the DEKs used for TDE. This provides customers with a single point of control for managing their DEKs, eliminating the need to manage individual DEKs in multiple Azure regions or countries.
References:
TDE with database-level CMK now available in public preview for Azure SQL Database
.

1. Azure SQL Database
2. Database-level CMK
3. T