Datacenter Bandwidth Estimation
This question is geared towards those who operate their own datacenters and networks. This question is not for those who talk about running their virtual machines and the question is not really for those who run single nodes.
What do you use to estimate the amount of bandwidth you need for your datacenter/new location? Is it more just like buying 10 Gbit uplink and then seeing if you need more or less after a few weeks or months of operation? What if it's a bigger deployment? What information factors into this decision (beyond finances and network costs, or are these the primary decision variables?)?