This document provides an introduction to the Internet of Things (IoT). It discusses how the IoT has evolved from concepts of ubiquitous computing introduced in 1988 and coining of the term "Internet of Things" in 1999. The IoT involves connecting physical objects to the internet and embedding sensors and intelligence in everyday objects to generate and exchange data. This enables objects, people, and computers to interact and take actions based on data. Key components of connected objects include sensors, intelligence, user interfaces, power, connectivity, and context. The growth of the IoT is generating large amounts of data ("Big Data") that can provide benefits if privacy and security of individuals are protected. Standards continue to develop for IoT connectivity and interaction though no