Microsoft Azure Security Technologies (AZ-500)

Azure Policy is a powerful tool that helps ensure compliance and governance within an Azure environment by enforcing specific rules and effects on resources. It allows administrators to define policies that control the properties of resources during their creation or updates, thereby preventing unwanted changes.

For example, you can use Azure Policy to enforce the use of specific resource types, restrict certain configurations, or ensure that all resources must reside in certain regions. If a resource is created or modified in violation of a defined policy, Azure Policy can deny the change or even remediate the resource back to a compliant state. This makes it a critical feature for organizations looking to maintain control over their Azure environment and adherence to organizational standards or regulatory requirements.

In contrast, while other choices like Network Security Groups control inbound and outbound network traffic, Azure Resource Manager is the deployment and management service for Azure resources, and Azure Role-Based Access Control manages user permissions, none of these options are specifically designed to prevent unwanted changes to the resources themselves in the way that Azure Policy is.