AI Infrastructure Spending Spans Multiple Layers as Amazon, TSMC, and Applied Digital Draw Attention

The ongoing build-out of artificial intelligence infrastructure is not a single-layer story, and a recent commentary from The Motley Fool argues that capital flowing into the AI sector moves through several distinct tiers — cloud computing platforms that rent out capacity, the chip foundries that manufacture the underlying silicon, and the data center operators that house the hardware.

That framing puts three publicly traded companies in focus across the stack. Amazon.com (NASDAQ:AMZN) sits at the cloud layer through its Amazon Web Services segment, alongside its retail, advertising, and subscription businesses. Shares closed at $256.78, up 2.18% from the prior close of $251.30, valuing the company at roughly $2.99 trillion.

Taiwan Semiconductor Manufacturing (NYSE:TSM) occupies the manufacturing layer, producing and packaging integrated circuits for customers worldwide. The stock gained 3.0% to close at $428.91, up from $416.43, bringing its market capitalization to approximately $2.10 trillion.

At the infrastructure layer, Applied Digital (NASDAQ:APLD) designs and operates data center facilities serving high-performance computing and AI workloads in North America. The smaller-cap name, valued at roughly $9.0 billion, rose 2.21% to $26.42 from a prior close of $25.85.

All three stocks advanced in the same session, a pattern consistent with broad investor interest in AI-related infrastructure names across market capitalizations — from trillion-dollar platform and foundry giants to much smaller data center operators.

The commentary also emphasizes that position sizing matters as much as security selection, allocating the largest share to the established players and a smaller slice to the higher-growth infrastructure name — a framing that reflects the differing risk and scale profiles across the AI supply chain.

Source: original release

What to watch

• Upcoming quarterly earnings reports from all three companies, particularly AWS revenue growth at Amazon and foundry utilization at TSMC.
• Updates on Applied Digital’s data center capacity expansions and new high-performance computing hosting contracts.
• Cloud capital expenditure guidance, which drives demand signals across the chip and data center layers.