Assuming you're doing dedicated machines for services. My company runs on-prem with a big cluster scheduler & maintains headroom in it; small deployments of new

Assuming you're doing dedicated machines for services. My company runs on-prem with a big cluster scheduler & maintains headroom in it; small deployments of new services and modest scale-ups of existing services don't require explicit capacity requests. Only if you're going to provision a huge number of instances do you need to wait for infra to buy machines. Which also requires advance planning with the "elastic" cloud anyway.