This document provides an introduction to the Internet of Things. It outlines that IoT allows for collecting more data from sensors, controlling devices remotely, and automating processes. The document discusses how IoT started with early microcontrollers like Arduino and has expanded to include various hardware options. It also examines the software used for prototyping, professional programming, data storage and analysis, and building complete IoT solutions. Key components of IoT include sensors, local processing and storage, networks, cloud processing and storage. A variety of hardware and software options exist to enable IoT applications.