In real scenarios, your physical device would try to send telemetry data to Bosch IoT Hub.
For this section, is it sufficient to simulate such attempts of sending data by using the interactive API docs > Bosch IoT Things - HTTP API (v2)
The entity 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.
Access on the digital twin is kept in a document called policy.
Find details on such tasks in the following sections: