Can't remember last time I had to worry about bandwidth for the servers. It only came up when talking about iPhones in the start because everyone was on realy slow mobile networks. Our company is usually very cost sensitive but all our server hotels so far has had unmetered bandwidth connected to a 100 Mbps interface. Has had zero complaints during the last 20 years even though we fill that one now and then.

But we don't use any of the usual cloud offerings, only smaller local companies.