This book showcases the state of the art in the field of electronics, as presented by researchers and engineers at the 56th Annual Meeting of the Italian Electronics Society (SIE), held in Naples, Italy, on June 25–27, 2025. It covers a broad range of aspects, including: integrated circuits and systems, micro- and nano-electronic devices, microwave electronics, sensors and microsystems, optoelectronics and photonics, power electronics, electronic systems and applications.