You have an Azure virtual machine named VM1 that runs Windows Server. You need to encrypt the contents of the disks on VM1 by using Azure Disk Encryption. What is a prerequisite for implementing Azure

Customer Lockbox for Microsoft Azure is a feature that gives customers control over situations where Microsoft support engineers might need to access customer data, and it is not a direct prerequisite for implementing Azure Disk Encryption.

Azure Disk Encryption (ADE) requires an Azure Key Vault to store and manage the encryption keys and secrets that are used to encrypt the virtual machine's disks. The Key Vault provides a highly secure and compliant solution for protecting cryptographic keys, ensuring that the disk encryption keys are safeguarded and accessible only to authorized services and processes for decryption.

A BitLocker recovery key is generated as part of the BitLocker encryption process (which ADE leverages) and is typically stored in the Azure Key Vault, but it is not a prerequisite for *implementing* ADE; rather, the Key Vault is the prerequisite to store such keys.

Data-link layer encryption refers to the encryption of data traversing the network infrastructure within Azure, which is distinct from and not a prerequisite for encrypting the data at rest on a virtual machine's disks using Azure Disk Encryption.