Amazon commits $10 billion（約1.6兆円） to a Missouri data center campus and is exploring direct sales of its Trainium AI chips outside AWS, signaling a shift toward acting as both cloud provider and AI hardware supplier—but raising questions about how much capital spending the business can sustain.

What happened: Amazon announced plans to invest $10.00 billion（約1.6兆円） in a new data center campus in Montgomery County, Missouri, and is exploring direct sales of its custom Trainium AI chips (specialized processors for AI workloads) to companies operating their own data centers.

Why it matters: These moves reinforce AI as Amazon's central investment narrative and deepen its capital spending intensity. The key near-term question is whether AWS can convert its AI backlog into cash flows fast enough to justify the spending, and how much regulatory pressure on advertising and cloud market power might affect profit margins. Amazon's shares have posted a modest year-to-date gain, suggesting the market has not significantly re-rated the stock on this news alone.

What to watch: The Simply Wall St Community's 86 fair value estimates for Amazon span roughly $218 to $450 per share, reflecting wide disagreement on valuation. The critical tension ahead is how much AI-driven capital expenditure the business can absorb before returns start to compress.