You have an ASP.Net core web application that is deployed to the Azure Web App service. You have to run a URL ping test every 10 minutes to ensure that the web app is accessible from different regions. You have to ensure that an alert is generated if the web application is unavailable from certain Azure regions. The solution needs to minimize development time. Which of the following must you implement for this requirement?

Answer options:

A.Ensure to use Azure Application Insights availability test and alerts.
B.Ensure to use Azure Service Health for specific Azure regions.
C.Use Azure Monitor availability metrics and alerts.
D.Deploy an Azure Function to specific regions.

Answer – A 
You can use the Azure Application Insights availability tests for this. This allows you to create URL tests that can be conducted from certain Azure regions. 
Option B is incorrect since this is used to check for the health of Azure services. 
Option C is incorrect since these tests are available in Azure Application Insights. 
Option D is incorrect since this is not a right approach for checking the availability of websites. 
For more information on monitoring the availability of websites, you can refer to the below link- 

https://docs.microsoft.com/en-us/azure/azure-monitor/app/monitor-web-app-availability