Sustainability is often pitched as a cost. In IT, it's frequently the opposite — the efficient choice is usually the cheaper one too.
Right-sizing infrastructure, retiring idle servers, consolidating SaaS sprawl, and enabling power management all reduce both your carbon footprint and your monthly spend. The two goals align more often than they conflict.
Start with an inventory you probably haven't done: what's running that no one is using? That alone often finds both waste and emissions in the same place.