InfluxDB is a time-series database used for storing IoT data, while MQTT is a lightweight messaging protocol used for efficient communication between devices in IoT environments. A smart sensor can be created using Python to transmit measurements over the internet using MQTT, which stores the data in InfluxDB. The MQTT broker acts as an intermediary for pub/sub (publish and subscribe) communication between devices and applications. InfluxDB provides a database and UI tools that enable visualization and querying of IoT data. By creating a smart sensor and setting up InfluxDB, users can efficiently store and manage IoT metrics, such as temperature measurements, in real-time. The system also includes an MQTT consumer that receives messages from the broker, stores them in InfluxDB, and visualizes the data using the InfluxDB UI.