The minimum [Transport Layer Security (TLS)](/troubleshoot/sql/database-engine/connect/tls-1-2-support-microsoft-sql-server) version setting allows customers to choose which version of TLS their SQL database uses. TLS is a cryptographic protocol used to secure client-server communications over a network. This ensures that sensitive information, such as authentication credentials and database queries, is safe from interception and tampering. It's possible to change the minimum TLS version by using the Azure portal, Azure PowerShell, and the Azure CLI.
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