AWS CEO Matt Garman says some AI clouds have 30% to 60% concentration with one or two customers. AWS's biggest is single digits. "I get lots of questions sometimes about how you feel about that spend and like, are you nervous about a bubble and other things like that." "Not all of our capacity is bundled up in one customer. And I think you go to some of these, whether they're neoclouds or some of the other providers out there, and you'll see sometimes concentrations of 30, 40, 50, 60% with one or two customers." "We're nowhere near that, obviously. We're single digit percentages at the highest, and usually it's less than that." "Those are the workloads that I think just aren't going to go away just because we see enterprises getting positive ROI." "There's no bubble in which they stop spending on that." - Matt Garman, CEO of AWS, in an a16z interview published October 8.