The document discusses the Internet of Things (IoT). It defines IoT as the network of physical objects embedded with electronics, software and sensors that can collect and exchange data. IoT allows objects to be sensed and controlled remotely via existing network infrastructure. The document outlines how IoT works using technologies like RFID sensors, smart technologies and nanotechnologies to connect smaller devices and collect and process data from physical things. It provides examples of IoT applications and discusses technological challenges to IoT like scalability, standardization, data volumes and power supply.