This lecture presents the Forum SI held at EPFL on February 6, 2024, focusing on sustainable IT practices and strategies. The event features discussions on various topics, including the sustainability of IT applications, the deployment of Microsoft 365, and the introduction of a new identity provider. The instructor outlines the importance of eco-design in digital services and the environmental impact of IT, emphasizing the need for a reduction in greenhouse gas emissions. The forum also addresses the current state of IT security, highlighting new tools and strategies to enhance security awareness among users. Additionally, the lecture covers the school's data storage strategy, aiming to provide scalable and reliable storage solutions that align with EPFL's sustainability goals. The session concludes with a call for collaboration among IT professionals at EPFL to address these critical issues and improve the overall IT landscape.