I get it
"If your salesmen and managers can't work on a Boeing 777 over the Atlantic, you're likely to hear some whining."
Really? I mean, really? Wouldn't they rather watch the movie? Whatever, ask them if they still have their earplugs, apply as directed to yourself.
"Cloud computing" as I understand it is dumb-client and the-network-is-the-computer, but outsourced; your data is served over the worldwide Internet and you don't have to choose, cas!re, or know where it actually is. Or, more realistically, you buy space inside a vast server hosting farm somewhere, and your business options probably include transferring the lot to a different hosting service whilst running effectively unchanged from your point of view.
For robustness or high availability, you may double up everything so that your business data resides on two or more such hosting services, independently, so that they don't break simultaneously. For instance, only one of the data centres is next to a nuclear power plant a short distance from the sea in Japan.
Yes, you rely on Internet access (and your electricity supply) to run your business, and so, yes, you make that extremely robust - with multiple ways to get to the Internet. Well, I'm assuming that your office is network-cabled as -well- as wi-if'ed and 3G'ed.