Microsoft's massive investment in artificial intelligence infrastructure appears to be paying off, easing investor concerns that the tech giant was spending too aggressively without generating enough returns. The strongest signal came from Azure, Microsoft's cloud computing platform, which posted 43% year-over-year revenue growth during the quarter. Google's parent company also reported blockbuster cloud growth, with Google Cloud revenue soaring 82%, but its shares fell after management raised capital spending forecasts. Investors worried that surging AI costs could eventually pressure profitability despite strong revenue growth. Microsoft expects Azure revenue growth to accelerate again next quarter to approximately 45%, even as quarterly capital spending climbs above $50 billion.