Application Insight extension needed or not?

Question

When using the latest version of the Application Insights(AI) SDK (at time of writing: 2.4.1) in code via NuGet, is the AI extension also needed on the web app extension list in Azure ?

Answer 1

No. The extension gives similar features as the SDK.

It is an option to use App Insights in an app without installing the SDK.

Answer 2

You may either install the Application Insights SDK via NuGet, aka build time, or enable the Application Insights site extension through the Azure Portal, aka run time.

If you do both, the Application Insights site extension will not work even though it is turned on.

You can refer to the Azure Monitor documentation on Application Insights for more information.