Amazon.com Inc. shares jumped 9.3% in after-hours trading following the release of second-quarter results that significantly exceeded analyst expectations.
The rally was driven primarily by the performance of Amazon Web Services (AWS), which delivered revenue growth well above consensus estimates in constant currency terms.
The cloud unit's strong showing helped lift the company's overall operating income, signaling that Amazon's heavy investments in artificial intelligence infrastructure are beginning to translate into robust top-line momentum.
Investors rewarded the clarity of the cloud business's trajectory, which has been a key focus for the market amid broader tech sector volatility.
This performance stands in sharp contrast to the recent struggles of rival Microsoft, whose shares have faced pressure as investors question the return on massive capital expenditures.
While Microsoft has endured a historic rout in recent months due to spending concerns, Amazon's results suggest that its cloud strategy is resonating more effectively with the market at this juncture.