Designing the Internet of Things by Adrian McEwen and Hakim Cassimally is one of the foundational books on designing and building Internet of Things (IoT) products. Published by John Wiley & Sons, it provides a practical roadmap for transforming an idea into a fully functional connected device—from early prototyping to large-scale manufacturing. Written for engineers, product designers, makers, software developers, and entrepreneurs, the book combines hardware, embedded software, networking, web services, and product design into a single, accessible guide.

Rather than focusing only on programming, the authors explain the complete IoT development process, including electronics, microcontrollers, sensors, networking protocols, cloud connectivity, industrial design, manufacturing, and user experience. Through hands-on examples using platforms such as Arduino, Raspberry Pi, BeagleBone, and embedded Linux systems, readers learn how to prototype connected devices, communicate with web services, and scale projects into commercially viable products. The book also discusses open-source hardware, Internet protocols, IPv6, APIs, security considerations, and startup strategies, making it an essential reference for anyone interested in IoT product development.