Data Centre Management
We're not the size of Cloudflare, but we use software which tracks every server, switch, patch panel, PDU, cable (data & mains), duct, etc. in our machines rooms. Any scheduled work has to be pre-booked through the software (Which gives you a report on what you're going to do) Any emergency work has to be updated into the software ASAP.
Failure to comply with using the software is quite simple: Everyone gets to take the piss out of you for causing someone else pain. (Yes, I've been on the receiving end) No management intervention required as peer-pressure is a far more effective stick in this situation.
The initial inputing of the data was a tedious piece of work and getting buy-in took some time, but now everyone sees its value. Now, when someone says "What happens if I cut this cable?" you click a button and it immediately tells you what will be affected.