Data centers are about as efficient as they ever can be, in terms of delivering power to servers and keeping them cool, so what's the next step to sustainable digital infrastructure?  There is a lot of talk about reusing the wasted heat that facilities produce, but this seems like a hard job when all too often they can't give it away for free.

Max Schulze is the founder of the Sustainable Digital Infrastructure Alliance (SDIA), a group of stakeholders aiming to achieve a sustainable digital infrastructure by 2030. He thinks the answer to heat reuse is economics, not engineering.

And when we've sorted that out, he foresees that the big cloud providers will be disaggregated, and the cloud will become the same kind of market as the electricity grid.