What tool would you use to monitor the performance and health of Azure resources?

Azure Monitor is the correct choice for monitoring the performance and health of Azure resources because it provides a comprehensive platform for collecting, analyzing, and acting on telemetry data from your Azure resources. This tool enables users to track metrics, logs, and performance data for various Azure services, allowing for real-time monitoring and alerts.

With Azure Monitor, organizations can create dashboards, set up alerts for specific conditions, and gain insights into application performance and resource health. The ability to visualize performance trends and diagnose issues ensures that administrators can maintain optimal performance and quickly address any potential problems.

In contrast, Azure Resource Manager is primarily focused on resource management and deployment, while Azure Advisor offers recommendations for optimizing Azure resources rather than monitoring them. Azure Functions, on the other hand, is a serverless compute service, suitable for executing code in response to events, but it does not function as a monitoring tool.