Amazon and Microsoft’s AI Gains Mask Cloud Slowdown

  • Investors are bracing for slowing growth in cloud businesses
  • The units are critical for the performance of both stocks

An Amazon fulfillment center in North Carolina.  

Photographer: Rachel Jessen/Bloomberg
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The buzz around artificial intelligence that’s helped juice gains for Microsoft Corp. and Amazon.com Inc. this year may also be masking struggles in a business far more critical to the pair’s bottom lines.

Once-booming demand for cloud-computing services is slowing as businesses rein in spending amid economic uncertainty. And when Microsoft and Amazon report results next week, analysts anticipate the slowest revenue growth for their cloud-computing businesses since the firms started breaking out performance last decade.