Application Development Manage Isaac Levin recently posted this article on building extensions for Application Insights.  In this post, he demonstrates how to capture additional HTTP metadata using custom telemetry Initializers for Application Insights.

I will start off by saying I love Application Insights. I have been using it for a long time, and am delighted at the new roll-out of features for it. I have even been giving a talk on Application Insights and how easy it is to instrument your application, so check that out if you are interested. One thing that is great about Application Insights is how extendable it is. The nature of how the data is structured allows a developer to add custom metadata to the telemetry, as well as add filter out telemetry based on specific criteria. Whenever I spin up a new app, I always notice that I add a handful of extensions to the telemetry collection process and thought it would be helpful to share.

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