I've been doing reliability stuff for near two decades. The one thing I am sure of is there is no way to just engineer your way to reliability. That is to say, no person, no matter how smart, can just invent some whizbang engineering thing and suddenly you have reliability. Reliability is a thing that grows, like a plant. You start out with a new system or piece of software. It's fragile, small, weak. It is threatene…
I'm not that familiar with setting up global network infrastructure but I imagine there are similar choices that can vastly affect initial reliability.