In this talk, I will take you on a journey from the world of molecular electronics to the transformative realm of the Internet of Things, illustrating how fundamental science can serve as a catalyst for engineering innovation. Drawing from my experiences and the foundational research conducted at the Max Planck Institute for the Physics of Complex Systems, I will share how our understanding of quantum phenomena and nanoscale materials has laid the groundwork for groundbreaking technological advancements. I will explore how theoretical insights into molecular systems have evolved into practical applications, enabling the development of efficient sensors, energy-harvesting devices, and interconnected IoT architectures. This journey highlights the importance of bridging fundamental research and engineering to tackle the challenges of our time. Through this talk, I will convey the critical role of interdisciplinary approaches in shaping our technological future and demonstrate how atomic-scale technologies can shape innovations which redefine connectivity, functionality, and sustainability in the age of smart systems and devices.