Microsoft, Amazon and Google Could Spend $600 Billion on AI This Year and Wall Street Wants Answers

Key takeaways Three tech giants approach $600 billion in investment Cloud growth accelerates while cash flow comes under pressure Upcoming earnings will test confidence in AI spending Microsoft, Amazon and Google are spending enormous sums to build the infrastructure behind artificial intelligence. This week, investors will find out whether their cloud businesses are growing fast enough to justify the cost. The three technology giants could invest nearly $600 billion in 2026, as demand for AI computing drives a wave of data-center construction and chip purchases.

Their combined backlog of contracted cloud business is approaching $1. 7 trillion. Microsoft and Google's parent company, Alphabet, report earnings Wednesday, October 28, followed by Amazon on Thursday.

The results arrive as Wall Street grows increasingly concerned about how quickly AI investment can translate into cash. Google Cloud Could Grow 95% as AI Demand Accelerates The encouraging news for investors is that customers continue buying computing capacity faster than cloud providers can bring it online. According to Reuters, analysts expect Google Cloud revenue to jump 95.

1% year over year in the September quarter. Microsoft's Azure business is forecast to grow 47. 7%, while Amazon Web Services could expand 38.

2%. Those are unusually strong growth rates for businesses already generating billions of dollars in quarterly revenue. However, the companies must build expensive infrastructure before they can serve much of that demand.

Amazon has outlined approximately $220 billion in capital spending for 2026, while Alphabet's investment plans stand near $195 billion–$205 billion. Microsoft's calendar-year spending could reach roughly $175 billion, including finance leases. The expansion has already placed pressure on Amazon's cash flow, despite AWS growing 37% in the previous quarter.

Investors will also examine whether Google Cloud can maintain its profitability as chip costs and infrastructure expenses rise. Wall Street Wants More Than Growing Cloud Revenue The biggest concern is no longer whether AI customers exist. It is whether the business can earn enough from them to cover the cost of building and operating increasingly expensive infrastructure.

According to an October 26 S&P Global Market Intelligence analysis, capital expenditure across major cloud infrastructure companies could reach $763 billion in 2026 and $1. 3 trillion in 2027. Those projections cover a broader group than Microsoft, Alphabet and Amazon.

The spending surge also helps explain why Meta's AI investments have attracted scrutiny despite continued advertising growth. Building data centers requires purchasing GPUs, securing electricity, developing networking systems and paying construction companies long before new facilities reach full capacity. Coinpaper previously reported where AI spending goes, showing how equipment suppliers can receive revenue before the companies financing the projects earn a return.

What Investors Should Watch in Big Tech Earnings Microsoft faces questions about Azure profitability, Copilot adoption and its growing infrastructure commitments. The company is also expected to provide more detailed Azure financial reporting. For Alphabet, attention will focus on Google Cloud margins and whether its advertising business can continue financing the expansion.

Amazon must demonstrate that accelerating AWS demand can eventually restore stronger free cash flow. These questions mirror the wider debate over AI investment returns, where revenue growth alone tells only part of the story. Recent Apollo research also found limited evidence of productivity gains outside the largest technology companies.