Andy Jassy disclosed in his annual shareholder letter that Amazon’s AI services at AWS are running at a $15 billion annual revenue rate. He also revealed that the company’s custom chip business — Graviton and Trainium — has crossed a $20 billion annualized run rate, roughly double what the company cited earlier this year.

Amazon stock jumped more than 5% on the news. The S&P closed at 6,824 and the Nasdaq at 22,822 on Thursday as the letter gave investors a concrete number to attach to years of capital expenditure narrative.