You are developing a multi-tier application that uses Azure App Service web apps as the front end, Azure SQL Database as the back end, and Azure Functions that write to Azure Storage. You need to notify the Azure DevOps team by email when the front end does not return an HTTP 200 status. Which feature should you use?

Availability tests in Azure Application Insights are the correct choice because they allow you to proactively monitor the uptime and responsiveness of your web applications from various geographic locations. You can configure these tests to check for specific HTTP response codes, such as HTTP 200, and trigger alerts (like email notifications) when the expected status is not returned. This directly addresses the requirement of notifying the DevOps team when the front end fails to return an HTTP 200 status. Service Map in Azure Log Analytics visualizes interdependencies between services but doesn't directly monitor HTTP status codes for alerting. Profiler in Azure Application Insights helps diagnose performance issues within your application code, not external availability. Application Map in Azure Application Insights visualizes the topology of your application components and their interactions, but it doesn't perform synthetic availability checks or trigger alerts based on HTTP status codes.