Which tool monitors a VM's CPU and memory usage over time?

Azure Monitor Metrics is the correct tool because it collects numerical data from resources like VMs, allowing you to track performance over time, including CPU and memory usage. You can visualize this data in charts and set up alerts based on thresholds. Azure Policy is used for enforcing organizational standards and compliance, not for monitoring performance data. Azure Advisor provides personalized recommendations for optimizing Azure resources, but doesn't directly monitor real-time metrics. Azure Cost Analysis helps you understand and manage your Azure spending, not resource performance.