> You could call it "colocation" or "renting space in a data center". What are you building? You're racking. Can you say what you mean?

TFA explain what they're doing, they literally write this:

"In general you have three main choices: Greenfield buildout (...), Cage Colocation (getting a private space inside a provider's datacenter enclosed by mesh walls), or Rack colocation...

We chose the second option"

I don't know how much clearer they can be.