In times to come, the Internet of Things (IoT) will have an increasing impact on our lives. The IoT is used in smart homes, smart cities and touches every industry. Many have predicted that the IoT will be the next big digital revolution.This book gives a comprehensive introduction to the IoT.The first part of the book introduces embedded systems. Central topics are sensors, actuators and the architecture of embedded systems.The second part of the book introduces the IoT, the architecture of the IoT, IoT communication and important IoT technologies. Other topics are also discussed like cloud computing and big data in connection with the IoT.