How is a direct method identified in the back-end app?

A direct method in Azure IoT is identified by a string that matches the name of the method defined in the device application. When a back-end application invokes a direct method on an IoT device, it does so by calling the method using its name, which should correspond exactly to the method implemented on the device side. This string-based identification is crucial for ensuring that the correct function is executed on the device, enabling specific commands or operations to be carried out remotely.

This design allows for ease of integration and communication between the device and its managing application, promoting clarity and consistency in how commands are structured. Consequently, any method invoked must match the naming conventions established in the device application, reinforcing the importance of maintaining cohesive naming across devices for effective method handling.