Your finances are in the cloud. Your social life is in the cloud. Your favorite binge shows are in the cloud. So where the hell is this cloud? By some estimates, about a third of all Internet traffic is powered by Amazon’s Web Services. And about 70% of the Internet is coming at you from a single U.S. region. The Atlantic’s Ingrid Burrington goes on a pilgrimage to get a glimpse of the cloud in northern Virginia; not too far from the source of the voice that first welcomed many of us to the Internet with the words, “You’ve got mail.”