Azure Durable Function External Event Trigger | How to Create

Orchestrator functions have the ability to wait and listen for external events. This feature of Durable Functions is often useful for handling human interaction or other external triggers.

The WaitForExternalEvent (.NET), waitForExternalEvent (JavaScript), and wait_for_external_event (Python) methods of the orchestration trigger binding allow an orchestrator function to asynchronously wait and listen for an external event. The listening orchestrator function declares the name of the event and the shape of the data it expects to receive.

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