Amazon Becomes Fifth $3 Trillion Company on AWS AI Surge

The interesting number in Amazon crossing $3 trillion this week isn't the market cap headline, it's AWS growing 37% year over year, its fastest quarterly print in 18 quarters. That is what a re-rate looks like when investors decide the AI capex is actually being absorbed by revenue rather than just parked in data centers.

Bloomberg reported that Amazon became only the fifth US company to top a $3 trillion valuation on August 3, joining Apple, Microsoft, Nvidia, and Alphabet, after a stock jump to a record high. AWS second-quarter revenue came in at $42.2 billion, an annualized run rate of about $169 billion. CEO Andy Jassy told investors that Amazon's AI and chips businesses have each cleared $25 billion in annualized revenue on their own, which starts to reframe AWS as a portfolio of AI-native lines rather than a single cloud number.

The other side of the story is what Amazon is paying for it. Jassy raised full-year 2026 capex from around $200 billion to roughly $220 billion, attributing the increase mostly to higher memory costs. He said even at $220 billion Amazon will not have enough capacity to meet 2026 demand, that most of 2027 AWS capacity is already reserved, and that the demand already booked for 2028 is 'striking.' Jassy delivered those numbers on the earnings call, not in audited filings, so the 2027 and 2028 booking claims are company framing rather than confirmed backlog. The 7.65 GW off-grid Texas gas plant Amazon backed days later is consistent with a company that thinks it is genuinely power- and capacity-bound.

Both the 37% growth print and the run-rate figure come from a single quarter of AWS reporting, not a trend. The reporting also doesn't break out how much of the $220 billion goes to Trainium versus Nvidia silicon, or what AWS operating margin actually looks like at this scale, and those are the two things that decide whether the story still holds a year from now.

For a leader on the customer side, the useful signal is scarcity. If your 2027 workload plan depends on AWS capacity you have not yet contracted, the window to negotiate as a buyer, rather than a price-taker, is closing faster than the capex line suggests.