What is Node-RED and how does it relate to the Internet of Things (IoT)? Node-RED is an open-source programming tool for wiring together hardware devices, APIs, and online services in new and interesting ways. It is used to create applications and solutions for the Internet of Things (IoT). Node-RED provides a browser-based flow editor that makes it easy to wire together flows using the wide range of nodes in the palette. It
flows that demonstrate how to create a connected object, control a Raspberry Pi, read from a sensor, and send an email or text message when a threshold is reached. Node-RED can be used to create applications that interact with physical devices, web services, and APIs to process and act on data in real-time.