Universities around the world are increasingly utilising edtech platforms to deliver their services, but at what environmental cost? Online platforms are often promoted as eco-friendly solutions because they are imagined and described as ‘virtual’ services. Metaphors like the ‘cloud’ present these services as detached from planetary ecologies and problematically erase any sense of their material infrastructure and associated carbon emissions. Through a focus on edtech infrastructure, this chapter examines the extended carbon relations within which higher education institutions are entangled, and the policy blind-spots through which these edtech carbon costs are rendered invisible. The environmental footprint of digital services is persistently overlooked in university carbon calculations and sustainability pledges. As higher education institutions outsource their information technology workloads to the cloud and form partnerships with edtech providers, they increasingly find themselves enmeshed within a complex relational web of globally distributed and energy-intensive IT infrastructure. Digital tools have a key role to play in building a low-carbon academy, but they also have environmental impacts that must be examined if the transition to a green economy is to be successful.