Amazon shares slid 7.4% in the days before its earnings report, driven by worries over the profitability of Amazon Web Services rather than overall sales growth. Investors are laser-focused on how AWS handles mounting costs tied to AI infrastructure investments.

The cloud segment, while making up just about 20% of Amazon’s revenue, is responsible for nearly 60% of the company’s operating income. This heavy reliance means even minor shifts in AWS margins could sway Amazon’s total profits significantly.

AWS revenue is forecast to hit $40.5 billion in Q2, marking over 30% growth year-over-year, but the story isn’t just about revenue. The cloud division’s operating margin, which surprised investors with a strong 37.7% in Q1, is now under scrutiny to see if it can hold steady or will falter amid rising depreciation and AI spending.

Amazon’s aggressive push into AI and data centers has drained free cash flow, sparking concerns about cash generation moving forward. The stock’s decline exceeds what options markets had priced in, reflecting heightened investor caution ahead of Thursday’s report.

Amazon’s results will be a clear indicator of how cloud giants balance rapid expansion with profitability. Every percentage point change in AWS margin translates to roughly $405 million in operating income, underscoring the stakes involved.

This content is for informational purposes and not financial advice.