A company must enable 400 employees to work remotely after an unexpected disaster. Desktops are a mix of Windows and Linux and have multiple installed applications (browsers, mail clients, etc.). The solution must integrate with the on-premises Active Directory so employees use their existing credentials, require multifactor authentication (MFA), and replicate the current desktop experience. Which approach satisfies these requirements?

This solution effectively addresses all requirements. Amazon WorkSpaces provides persistent cloud desktops for both Windows and Linux, replicating the current desktop experience. Establishing a VPN to the on-premises network allows secure communication. An AD Connector integrates with the existing Active Directory, enabling employees to use their current credentials. Configuring a RADIUS server for MFA with WorkSpaces ensures multifactor authentication. The first incorrect option suggests enabling MFA through the AWS Management Console, which is not how WorkSpaces MFA is typically configured with on-premises AD; it usually requires a RADIUS server. The second and fourth incorrect options use Amazon AppStream 2.0, which is for application streaming, not full desktop replacement, and therefore wouldn't replicate the full desktop experience with multiple installed applications as required.