You have an Azure subscription that contains 100 virtual machines.

You have a set of Pester tests in PowerShell that validate the virtual machine environment.

You need to run the tests whenever there is an operating system update on the virtual machines. The solution must minimize implementation time and recurring costs.

Which three resources should you use to implement the tests? Each correct answer presents part of the solution.

NOTE: Each correct selection is worth one point.

A. Azure Automation runbook

B. an alert rule

C. an Azure Monitor query
D. a virtual machine that has network access to the 100 virtual machines

E. an alert action group

Explanation:
AE: You can call Azure Automation runbooks by using action groups or by using classic alerts to automate tasks based on alerts.

B: Alerts are one of the key features of Azure Monitor. They allow us to alert on actions within an Azure subscription

Reference:
https://docs.microsoft.com/en-us/azure/automation/automation-create-alert-triggered-runbook

https://techsnips.io/snips/how-to-create-and-test-azure-monitor-alerts/?page=13