In real scenarios, your physical device would try to send telemetry data to Bosch IoT Hub.
For this tutorial, it is sufficient to simulate such attempts of sending data by using the interactive API docs > Bosch IoT Manger - HTTP API.
The real new features to learn here is how to remotely create, enable and trigger a rule which can remotely control the device.
The entity your.namespace:hello-world-device-01 is regarded as the digital twin of your device.
However, you can now adjust it to represent the features (i.e. the functionality of your device) or enrich it with attributes, etc.
Find details on such tasks in the following sections: