An Azure service that is used to provision Windows and Linux virtual machines.
You have to configure additional monitoring collectors via Log Analytics Agent (Monitoring Agent), the agent must be deployed on the machine.. it will collect all relevant information and present them in portal (if you configure a dashboard)
But be aware, that you have to pay additional fees for the log analytics storage - as it is calculated by ingestions, so please choose only values that are relevant.
You can find more information here:
https://learn.microsoft.com/en-us/azure/azure-monitor/agents/data-sources-performance-counters#configuring-performance-counters