AppInsights

Application Insights is an extensible Application Performance Management (APM) service for ASP.NET Core application. We can use it to monitor your live web application. Application Insights for ASP.NET Core applications

Update InstrumentationKey in appsettings.json

"ApplicationInsights": {
        "InstrumentationKey": "putinstrumentationkeyhere"
      }

Or set following environment varibles:

APPINSIGHTS_INSTRUMENTATIONKEY