This document is the Hitachi Sustainability Report 2023, which outlines the company's approach to Social Innovation Business aimed at fostering a sustainable society. It describes Hitachi's identification of six material topics and 15 sub-material topics as key management issues, emphasizing sustainable management as a core business strategy. The report details various initiatives, including the development of eco-efficient technologies in energy, such as the EconiQ portfolio that eliminates SF6 from high-voltage electrical equipment. It also highlights the MaaS project in Genova, Italy, which integrates urban mobility solutions to enhance public transport efficiency. Furthermore, the report discusses advancements in healthcare, including collaborations for improving healthy life expectancy through diagnostics and therapy, and innovations in radiation therapy. Hitachi's commitment to sustainability is evident in its diverse projects that aim to improve quality of life while addressing environmental challenges.