UBS projects hyperscalers will spend $4.1 trillion on AI infrastructure from 2026 to 2028, tripling the $1.3 trillion deployed over the previous six years.
Amazon, Alphabet, and Microsoft will collectively spend 102% of their cloud revenue on capex in 2026, recycling nearly all cloud income back into AI infrastructure.
The investment winners won't be the biggest spenders but companies converting that unprecedented infrastructure buildout into recurring revenue and strong returns on capital.
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The artificial intelligence boom is turning corporate capital spending into a different kind of arms race. The biggest cloud companies aren't merely adding data centers as demand grows; they're building infrastructure years ahead of expected usage.
UBS now estimates hyperscaler capital expenditures could reach about $4.1 trillion from 2026 through 2028. That's more than three times the $1.292 trillion spent across the previous six years, based on UBS's hyperscaler spending estimates. For investors, the message is clear: AI is pushing the industry's long-term spending base into territory that would have looked absurd just a few years ago.
UBS estimates Amazon (NASDAQ:AMZN), Alphabet (NASDAQ:GOOG), and Microsoft (NASDAQ:MSFT) will collectively spend about 102% of their cloud revenue on capital expenditures in 2026.
That doesn't mean these companies are burning through more cash than they generate. Their businesses are much larger and more diversified than cloud infrastructure alone. Instead, the ratio shows how aggressively cloud revenue is being recycled into AI infrastructure.
UBS expects that ratio to ease to roughly 99% of cloud revenue in 2027 and 94% in 2028. Yet spending keeps rising.
UBS projects total hyperscaler capex at $492 billion in 2025, $1.009 trillion in 2026, $1.447 trillion in 2027, and $1.619 trillion in 2028 — three times more in three years than in the previous six years combined. It shows how the growth rate can slow while the dollar amount continues climbing.
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And the composition matters, too. Amazon, Alphabet, Microsoft, and Meta Platforms (NASDAQ:META) account for the largest portions of the buildout, but SpaceX (NASDAQ:SPCX) is making up for lost time, and Oracle (NYSE:ORCL), neocloud providers, and newer entrants are expanding the spending pool.
That means the AI infrastructure opportunity is spreading beyond the handful of companies investors typically associate with the boom.
The cumulative UBS estimates for 2026 through 2028 are staggering:
Together, those figures illustrate why this isn't simply another upgrade cycle for servers. New demand is coming from traditional hyperscalers, neocloud providers, and SpaceX, creating additional pools of infrastructure spending.
