The future is built on software. While there is (rightly) a strong focus on improving the sustainability of physical processes, primarily with the intent to reduce the carbon footprint, it is going to be increasingly important that our software solutions are also built in a sustainable, "green", way. This is aligned with the broader industry where it's anticipated that data centers will account for up to 8% of the total power consumed in the next decade, so it's going to be critical that our solutions evolve along with this scale. This session will give an introduction to the principles of sustainable software solutions (i.e. “green software”) including energy efficiency, carbon awareness, and hardware efficiency. I’ll share an overview of Shell's journey to net-zero and where software engineering & sustainable software plays, and the kind of actions we're taking to embed practices and patterns.