Amazon's cloud business just posted its fastest growth in more than four years, a 37 percent jump in second-quarter revenue that sent the stock up enough to add roughly $340 billion in market value if the gains hold. The number matters because it answers the only question Wall Street has left about Big Tech's AI build-out: not whether demand exists, but whether the unprecedented spending is already showing up in the top line.
The spending number that matters
Amazon raised its 2026 capital expenditure plan by 10 percent to $220 billion, part of a broader Big Tech AI outlay expected to top $730 billion this year. Microsoft kicked off the earnings parade earlier this week with a 43 percent cloud revenue surge and a 15 percent stock jump. Amazon's AWS acceleration, the strongest since 2022, suggests the spending cycle is no longer a leap of faith.
Free cash flow went the other way
The counter-argument lives in the cash flow statement. Amazon burned $7.6 billion in free cash flow on a trailing twelve-month basis, a sharp reversal from $18.2 billion of positive flow a year earlier. CEO Andy Jassy framed the burn as deliberate, telling investors that a majority of 2027 cloud capacity and chunks of 2028 are already spoken for. The market appears to be buying that logic: at least 15 brokerages lifted price targets after the print.
The capacity signal
Jassy's reservation data is the quietest and most important number in the release. When a cloud provider says next year's capacity is largely sold and the following year is filling up, the capital intensity stops looking like speculation and starts looking like order fulfillment. Check Capital's Chris Ballard called the approach "methodical and responsible," which is not a phrase often attached to a $220 billion budget.
Valuation reflects the premium
Amazon now trades at 24.67 times earnings, a noticeable premium to Microsoft's 22.94 and Alphabet's 19.35. The gap is the price of proof. As REX Financial's Bill Birmingham put it, the dividing line has shifted from whether AI demand is real to whether spending produces visible, near-term revenue and margin expansion. Amazon showed it this quarter. Whether the rest of the cohort can keep up is the next trade.