Node-RED is an open-source programming tool used to create applications and automate processes. It is used to connect different devices, services, and hardware components in order to create workflows. It is a graphical programming tool that allows users to create applications by dragging and dropping nodes on a canvas.
Node-RED is closely related to the Internet of Things (IoT), as it can be used to connect different devices and services together, allowing them to communicate and exchange data. For example, a Node-RED flow could be created to monitor temperature sensors connected to an IoT platform. The temperature data can be collected, processed, and used to trigger automated actions like turning on a heater or sending a notification.