Your company has the infrastructure shown in the following table.
The on-premises Active Directory domain syncs with Azure Active Directory (Azure AD).
Server1 runs an application named App1 that uses LDAP queries to verify user identities in the on-premises Active Directory domain.
You plan to migrate Server1 to a virtual machine in Subscription1.
A company security policy states that the virtual machines and services deployed to Subscription1 must be prevented from accessing the on-premises network.
You need to recommend a solution to ensure that App1 continues to function after the migration. The solution must meet the security policy.
What should you include in the recommendation?
- A: Azure AD Application Proxy
- B: the Active Directory Domain Services role on a virtual machine
- C: an Azure VPN gateway
- D: Azure AD Domain Services (Azure AD DS)