Trusted launch for Azure VMs - Azure Virtual Machines | Microsoft Docs
Azure offers trusted launch as a seamless way to improve the security of VMs. Trusted launch protects against advanced and persistent attack techniques. Trusted launch is composed of several, coordinated infrastructure technologies that can be enabled independently. Each technology provides another layer of defense against sophisticated threats. Trusted launch requires the creation of new virtual machines. You can't enable trusted launch on existing virtual machines that were initially created without it. Trusted launch is currently in public preview. This preview version is provided without a service level agreement. Certain features are not supported or might have constrained capabilities. For more information, see Supplemental Terms of Use for Microsoft Azure Previews.