The solution correctly meets the goal. Azure Active Directory (Azure AD) Conditional Access policies are the designated tool for enforcing granular access control to applications integrated with Azure AD, such as Dynamics 365 Finance and Operations. These policies can be configured to require specific conditions to be met before access is granted. The two requirements, mandating company-managed devices and enforcing multi-factor authentication (MFA) for administrative roles, are standard use cases for Conditional Access policies. A policy can be set to grant access only from compliant or hybrid Azure AD-joined devices, and another policy can be targeted at users with administrative roles to require MFA.

B. No: This is incorrect. Azure AD Conditional Access is the specific Microsoft technology designed to implement the exact security controls described in the requirements for cloud applications like Dynamics 365.

1. Microsoft Learn: What is Conditional Access in Azure Active Directory?

Reference: This document provides the foundational concept. It states, "Conditional Access policies... allow you to enforce controls on the access to apps in your environment, all based on specific conditions." This confirms it is the correct tool for the scenario.

2. Microsoft Learn: Conditional Access: Conditions

Reference: Under the "Device state" section, the documentation explains that policies can be configured to "require a device to be marked as compliant" or "require a hybrid Azure AD joined device." This directly addresses the requirement for using company-managed devices.

3. Microsoft Learn: Conditional Access: Grant

Reference: This document lists "Require multi-factor authentication" as a primary access control that can be enforced by a Conditional Access policy. This directly addresses the MFA requirement for administrators.

4. Microsoft Learn: Common Conditional Access policies

Reference: This page provides templates for common security scenarios, including "Requiring MFA for administrators" and "Requiring a compliant or hybrid Azure AD joined device for all users." This validates that the proposed solution aligns with Microsoft's recommended security practices.