Final answer:
A Security Policy defines the recommended set of controls for resources within a specific Azure subscription or resource group, part of the Azure Security Center which provides threat protection.
Step-by-step explanation:
The set of controls that are recommended for resources within a specified subscription or resource group in Microsoft Azure is defined by a Security Policy. This policy is a part of Azure's comprehensive security management system, which includes tools such as Azure Security Center.
Azure Security Center is a centralized service that provides advanced threat protection across hybrid cloud workloads and includes a range of security management and threat detection features. It helps to assess and implement security policies across your Azure subscriptions and resource groups, ensuring you can maintain a strong security posture and protect against potential threats.