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Whatever Thursday’s broad market moves, one thing is clear after the latest megacap tech earnings reports.

Investors are closely watching growth in Amazon's cloud computing unit, which faces increasing pressure from rivals and artificial intelligence deals.

Amazon reported third-quarter earnings that exceeded expectations, which prompted a 13% rise in its share value during after-hours trading on Thursday.

With the largest cloud and internet companies reporting results this week, it's clear that spending on artificial intelligence is only increasing.

Amazon blew past analyst estimates in its third-quarter earnings report and raised its capital expenditures forecast for the year to $125 billion.

Rolling coverage of the latest economic and financial news