The relentless surge of artificial intelligence, hyperscale computing, and next-generation networks is exposing the limitations of traditional pluggable optical transceivers. Electrical signal integrity challenges, escalating power consumption, and physical density constraints at speeds exceeding. Why has CPO become so popular in the industry? The rapid expansion of AI training clusters and hyperscale data centers is placing unprecedented pressure on interconnection in the global computing infrastructure. Over the past few years, overall data center bandwidth has increased 80-fold; switch. Increased bandwidth, however, usually comes at the price of increased power, definitely an unwanted side effect in the era of skyrocketing data centers' energy consumption: it's worth reminding that a single Nvidia rack is expected to draw as much as 600 kilowatts in 2027. Co-Packaged Optics (CPO) has emerged as a revolutionary architecture that tightly integrates optics with. Before diving into the CPO technical roadmap and future deployment prospects, it is worth briefly introducing this silicon photonics architecture and how it bolsters Artificial Intelligence (AI), High-Performance Computing (HPC), and high-speed networking applications—particularly as copper-based.