Which service enforces standards like naming conventions and allowed VM SKUs across Azure resources?

Azure Policy is the correct answer because it allows you to create, assign, and manage policies that enforce rules and effects over your resources. This includes defining naming conventions, restricting resource types, and specifying allowed VM SKUs, ensuring compliance with organizational standards. Azure Monitor is incorrect because it focuses on collecting, analyzing, and acting on telemetry data from your Azure and on-premises environments, not enforcing standards. Azure Blueprints is incorrect because it helps orchestrate the deployment of various resource templates and artifacts, but Azure Policy is the underlying service that enforces the rules within those deployments. Azure Resource Graph is incorrect because it provides an efficient and performant way to explore Azure resources at scale, enabling effective governance and compliance, but it doesn't enforce policies itself.