Big Tech earnings preview: Amazon, Alphabet and Microsoft face the $1 trillion AI question

AI infrastructure spending must translate into profitable growth and cash generation for Microsoft, Alphabet and Amazon, or even strong earnings could disappoint investors.

• Major cloud and technology companies are expected to invest around 763 billion USD in infrastructure in 2026, potentially rising to 1.3 trillion USD in 2027, although these figures are forecasts rather than committed spending.
• Microsoft’s Azure revenue grew 43% in the June quarter, management expects 44% to 45% constant-currency growth next quarter, and quarterly capital expenditure is expected to exceed 50 billion USD.
• Alphabet’s Google Cloud revenue surged 82% in the June quarter, but investors need to see operating profits keep pace with the cost of additional computing capacity while AI-powered search evolves without damaging its advertising business.
• Amazon Web Services revenue grew 37% in the June quarter, while Amazon’s free cash flow was negative 7.6 billion USD over the preceding 12 months because infrastructure investment exceeded operating cash generation.
• The main risks are slower AI demand than planned capacity, lower computing prices caused by competition, and higher electricity, financing and equipment costs; warning signs include slowing cloud growth, declining margins and repeated spending increases.

Takeaway: Investors should compare cloud growth with margins, follow the path of free cash flow and scrutinise spending guidance, while recognising that heavy investment is not necessarily destructive if eventual returns justify it and that one earnings report cannot settle the question.