Azure clocked a 26% jump to $29.9 billion, and Google (GOOG) Cloud grew 32% to $13.6 billion. However, "Amazon has the bigger business, so it's not surprising that Microsoft's growth rate is faster, given its smaller size,

Amazon.com ( AMZN-Q) shares dropped nearly 8 per cent before the bell on Friday, after growth in its cloud computing unit failed to impress investors, in contrast to the robust gains reported by AI-focused rivals Alphabet ( GOOGL-Q) and Microsoft ( MSFT-Q ).