This book presents recent advances on IoT and connected technologies. We are currently in the midst of the Fourth Industrial Revolution, and IoT is having the most significant impact on our society. The recent adoption of a variety of enabling wireless communication technologies like RFID tags, BLE, ZigBee, etc., embedded sensor and actuator nodes, and various protocols like CoAP, MQTT, DNS, etc., has made the Internet of things (IoT) step out of its infancy. Internet of things (IoT) and connecting technologies are already having profound effects on the different parts of society like the government, health care, businesses, and personal lives. 6th International Conference on Internet of Things and Connected Technologies (ICIoTCT), 2021, was a platform to discuss and feature research on topics such as augmented reality, sensor networks, and wearable technology. This book is ideally designed for marketing managers, business professionals, researchers,  academicians, and graduate-level students seeking to learn how IoT and connecting technologies increase the amount of data gained through devices, enhance customer experience, and widen the scope of IoT analytics in enhancing customer marketing outcomes.