[xg15]

> The movement to the cloud is more energy efficient than companies running everything on-premises.

For private users, how is downloading a song or movie again each time I want to watch it more energy efficient that having it on my hard drive?

For corporate users, "Cloud software" is to a large part replacing traditional desktop software. As such, the comparison is only partially with in-house data centers - it's also with software running exclusively on users' actual work PCs - which they would shut down after they have finished working.

Even if you compare client/server software, you leaving out the energy expended by routing the data over the internet. Even if the cloud service itself can use energy more efficiently inside their data center, routing uses energy that you wouldn't need for a server in the basement.

> How much these efficiencies will be canceled out by the mass movement to digital transformation will be obvious in ten years from now.

Which is probably too late.