Andy Jassy Just Delivered Great News for Amazon Stock Investors

AWS growth accelerated to 39.3% year over year in Q3 2026, its fastest pace in nearly five years, and AMZN is backing it with a $220 billion AI infrastructure spending plan. The headline number reframes the debate over whether that outlay is justified.

Customer commitments give the spending plan its support. Amazon reported a $578 billion backlog, which management points to as evidence that demand is real. Interpretation: a backlog of that size relative to the $220 billion buildout suggests the capacity is largely spoken for, though how quickly the backlog converts to revenue is not given.

The cost is visible in cash flow. Free cash flow turned negative as capital expenditures surged. That is the trade-off investors are being asked to accept: near-term cash burn in exchange for AWS expansion.

The offset is profitability. AWS margins are improving rapidly even as the unit scales, which counters the bear case that heavy AI spending dilutes returns. Interpretation: if profitability keeps rising alongside growth, the negative free cash flow looks more like timing than structural damage.