The IEEE Workshop on Signal and Power Integrity (SPI) is an annual scientific event in Europe dedicated to all aspects of Signal and Power Integrity, encompassing the latest research and developments on design, characterization, modeling, simulation and testing at chip, package, board, and system levels. The workshop brings together researchers and developers from academia and industry worldwide, providing a key environment to foster cooperation and knowledge exchange. It offers an engaging program to attendees, which includes keynotes and tutorials on emerging topics presented by renowned experts affiliated with leading institutions and companies, alongside dynamic oral and poster technical sessions on the latest research outcomes, and also valuable networking moments. SPI's 29th edition was held during May 11-14, 2025, in Gaeta, Italy. The next SPI workshop will be held as an in-person event during June 14-17, 2026, in Turin, Italy.