This document provides an overview of the Internet of Things (IoT). It defines IoT as the network of physical objects embedded with sensors that can collect and exchange data. The document then discusses how IoT works by connecting "things" through technologies like RFID, and outlines the current applications of IoT in various industries. Finally, it discusses some of the technological challenges of IoT like scalability and data volumes, as well as criticisms around privacy, security and control issues with a network of connected devices.