Welcome to the Signal Integrity and Power Integrity Column!, With great pleasure, I introduce to you a contribution by Biyao Zhao and co-authors about a systematic approach for Power Integrity (PI) analysis of power distribution networks (PDNs) in multi-layered printed circuit boards (PCBs). Power Integrity is an essential consideration for high-speed designs. Noise in PDNs due to poor designs may lead to malfunction or failure of high-speed circuit systems. One main objective of the PDN design is to achieve target impedance. For this purpose, various methodologies have been proposed in the literature to address the PI modeling and analysis of PDNs, many of which are already in commercial use.