The term “Internet of Things” (IOT) refers to the vast number of actual objects that are networked together online for the purpose of sharing and analyzing raw data. The data collected and analyzed by IOT renders the devices and their algorithms more intelligent. The Internet of Things has the potential to revolutionize every facet of human existence. The notion of the “smart city,” for instance, was developed as a result of the utilization of data acquired in urban settings to better manage infrastructure and public services. If the city is networked, it becomes intelligent. A well-connected city has better traffic and transportation management, higher-performing procedures, more effective resource use, lower service costs, and better urban services. This book is written for the readers from the field of Science and Technology. This book enables student from technology field to gain new information related to it. This book comprises topics like Internet of Things Concepts, Overview of IOT Architecture, Enabling Technologies, IOT Platforms and Operating Systems, Technical Revolutions, Cyber-Physical Systems, IOT System Requirements, Cloud Computing in IOT, Fog Computing in IOT, RFID in the Internet of Things, IOT Design and Prototyping with Examples, Design and Prototyping of IOT Applications, The Standardization Environment, Blockchain-Based Security Solutions for lot Systems, Risks Associated with IOT, IT Auditing, and others.