What management tool should be used to delegate access for the InfraSec group to meet security requirements?

The use of a management group is the most appropriate choice for delegating access for the InfraSec group while meeting security requirements. Management groups in Azure provide a way to manage access, policies, and compliance across multiple subscriptions. By utilizing a management group, you can apply Azure policy and role-based access control (RBAC) at a higher level, which then cascades down to all the subscriptions and resources within that management group.

This hierarchical structure allows organizations to enforce uniform security and compliance measures across all related resources, ensuring that the InfraSec group has the necessary permissions to manage security effectively while adhering to overarching governance policies. This is particularly important in large enterprises where maintaining security posture requires consistent application of access controls across many subscriptions.

In contrast, Azure roles offer a more granular level of access control but are typically focused on specific resources or operations rather than broader organizational policies. Active Directory Domain Services may be relevant for managing identities and access, but it does not specifically address Azure’s resource management needs. Resource groups serve as organizational units for grouping and managing resources but do not provide the higher-level governance capabilities that a management group offers.