Telemetry Initializers for Application Insights

Telemetry Initializers set context properties that are sent along with every item of telemetry.

You can write your own initializers to set context properties.

The standard initializers are all set either by the Web or WindowsServer NuGet packages and can be found at ApplicationInsights.config reference - Azure - Azure Monitor | Microsoft Docs.

Examples of standard initializers are:

• AccountIdTelemetryInitializer sets the AccountId property.
• AuthenticatedUserIdTelemetryInitializer sets the AuthenticatedUserId property as set by the JavaScript SDK.