Following its blockbuster earnings release, $Microsoft(MSFT.US)shares have continued to climb in early August. According to MarketWatch, the stock recorded its strongest three-day rally since October 2000, gaining nearly 25% over the period and erasing its earlier year-to-date losses.The recent share price surge reflects a shift in investor sentiment—from questioning whether Microsoft's AI spending would pay off to believing that the company is successfully monetising AI at scale. The combination of stronger-than-expected Azure growth, rising Copilot adoption, robust cash flow, and optimistic management guidance has reinforced Microsoft's position as one of the leading beneficiaries of the AI revolution.After the sharp rally, expectations are now very high. Any slowdown in Azure growth or AI adoption could lead to increased volatility.Microsoft is still spending aggressively on AI infrastructure. Investors will continue to monitor whether these investments translate into sustained earnings growth.Although Microsoft continues investing heavily in AI infrastructure and data centres, management indicated it expects to maintain healthy cash generation and does not anticipate negative free cash flow during the new fiscal year. This helped ease concerns that capital expenditure would weigh excessively on profitability.