The convergence of monolithic CMOS and MEMS foundries is paving the way for the next generation of sensor technologies, particularly in the realm of piezoelectric devices. This integration allows for the seamless coupling of advanced semiconductor fabrication with MEMS structures, enabling ultra-compact, high-performance piezoelectric sensors. The emergence of chiplet-based architectures further enhances design flexibility, reducing costs, and accelerating time-to-market. This presentation will explore how this convergence supports the development of cutting-edge technologies, ranging from advanced wearables to medical devices, and its implications for the future of sensor-driven applications across industries.