Microsoft's $41 billion AI bet just cleared a major test: Chart of the Day

Microsoft's $41 billion AI bet just cleared a major test: Chart of the Day Jared Blikre Thu, July 30, 2026 at 5:08 PM GMT+2 2 min read MSFT Microsoft ( MSFT ) poured another record sum into AI infrastructure. Its Azure cloud business is finally growing faster as well. The stock rose as much as 16% Thursday, on track for its best day since October 2008.

Azure revenue jumped 43% last quarter , its fastest growth in four years and well ahead of the roughly 40% Wall Street expected. Microsoft stock rose about 3% in late trading Wednesday after posting a 0. 7% loss at the close.

The acceleration came as quarterly capital expenditures — spending on long-term assets such as data centers and equipment — surged 70% to $41 billion. Microsoft has been spending at a historic pace to add computing capacity, even as investors question how quickly Big Tech can earn a return on its enormous AI build-out . This quarter provided the strongest evidence yet that the expansion is producing faster growth.

The chart below shows Microsoft's quarterly capital spending alongside Azure growth. The company spent slightly less than analysts expected, while Azure cleared its growth hurdle by more than 3 percentage points. Company filings, Yahoo Finance analysis The rest of the quarter backed that up.

Overall revenue rose 18% to $90 billion, topping expectations of $87. 7 billion, while adjusted earnings of $4. 74 per share beat forecasts of $4.

25. Operating income climbed to $40. 6 billion.

The response stands in contrast with Alphabet ( GOOG , GOOGL ), which delivered its own blockbuster cloud quarter last week. Google Cloud revenue surged 82% as profitability widened, but Alphabet stock plunged 7% the following day — its worst session in more than two months — after the company raised its spending outlook. Strong growth was not enough to overcome fears about the bill.

Microsoft faced the same test and received a very different verdict. Its stock jumped about 9% in after-hours trading. The company expects Azure growth to accelerate again next quarter, to roughly 45%, even as capital spending climbs above $50 billion.

Demand still exceeds available supply, but Microsoft said new capacity is producing revenue almost immediately. "When we can make efficiency gains, they are quickly monetized in quarter," CFO Amy Hood said. Jared Blikre is the global markets and data editor for Yahoo Finance.

Follow him on X at @SPYJared or email him at jaredblikre@yahooinc. com.