Which service enforces tagging standards automatically during resource deployment?

Azure Policy is the correct answer because it allows you to create, assign, and manage policies that enforce rules and effects over your resources. You can define policies that require specific tags on resources during deployment, ensuring compliance with your organization's tagging standards. If a resource is deployed without the required tags, Azure Policy can block the deployment or audit the non-compliance. Azure Monitor is incorrect because it focuses on collecting, analyzing, and acting on telemetry data from your Azure and on-premises environments, not enforcing deployment standards. Azure Blueprints is incorrect because it orchestrates the deployment of various resource templates and policies, but Azure Policy is the specific service that enforces the tagging standard itself. Azure Cost Management is incorrect because it helps you analyze and manage your cloud spending, not enforce resource configuration during deployment.