From ultra-high frequency communications to AI-driven applications, the demand for precise timing is expanding across both wired and wireless domains. This presentation summarizes the practical needs for synchronization from the device edge to the network edge and introduces a clock module configuration designed to meet these requirements. Specifically, we will address the following three points: Distributed MIMO technology and time synchronization in ultra-high frequency communications The need for high-precision local oscillators (LOs) in such communications The importance of time stamping at the device edge in AI/digital twin applications and the corresponding device technologies We will also present our development activities and results. In recent years, the practical application of optical frequency standards, such as optical lattice clocks, has advanced significantly. In Japan, “optical internet” technology—combining these standards with photonics-electronics convergence devices—is being developed. Optical lattice clocks have already begun steering the distribution of standard time, and improved time synchronization accuracy is becoming a reality. In parallel, technological development is progressing for non-terrestrial networks (NTN), including High Altitude Platform Stations (HAPS) as disaster response platforms. These efforts are closely linked to the future vision of wireless cell towers. Together, these trends are forming the foundation of Japan’s next-generation infrastructure, enhancing the stability of standard frequencies in wired systems and building a robust communications environment independent of GNSS in wireless systems. To connect these technologies to societal implementation, it is essential to explore industrial and application fields. High-performance infrastructure only gains social value when it meets real-world needs. Without a clear vision, technological development cannot accelerate. As mentioned earlier, improvements in performance from the backhaul side are now reaching the network edge. However, accurately understanding the on-site needs and technical requirements from the device edge—and identifying specific challenges in each application field—is crucial to driving future development. This presentation aims to offer a new perspective on the intersection of technological advancement and societal implementation, considering these factors.