The document discusses the Internet of Things (IoT). It begins with an overview of how IoT originated and developed from early computer networks created by the US government. IoT combines sensors, connectivity between devices, and interactions between people and processes to create smart applications. Examples of IoT applications include environmental monitoring, industrial uses, and smart metering. The document also discusses challenges and opportunities with IoT, such as governments increasing spending on IoT solutions and the development of cloud-based and public-private IoT projects.