Concepts & Terminology

Common terms used in IoTBackend documentation.

• Device UID: Unique identifier of a registered device.
• Device credentials: Per-device MQTT username and password.
• Telemetry: Data sent by the device to the cloud (status and runtime values).
• Command: Message sent from cloud to device, for example reboot.
• OTA update: Firmware update delivered remotely.
• Managed mode: Firmware includes IoTBackend integration and supports Dashboard control.
• Unmanaged mode: Firmware does not include IoTBackend integration.

Presence states

Devices can appear in three states:

• ONLINE: Fresh telemetry is being received.
• RECONNECTING: Device is reconnecting or telemetry is temporarily delayed.
• OFFLINE: No telemetry for too long.