The most advanced semiconductors don't just come from clever design — they depend on staggeringly complex machines that etch circuitry at scales far smaller than a virus. According to MIT Technology Review, the Dutch company ASML has built one of the most extreme examples yet: a chipmaking machine priced at $400 million.

The scale of the hardware is hard to picture. MIT Technology Review describes the contraption as the size of a double-decker bus, weighing more than 150 tons. It's built from precision-milled aluminum and wrapped in thousands of snaking tubes, colored cables, and pressurized tanks.

The report opens with a vivid image of the work involved: Jos Benschop, an ASML executive, climbing a ladder simply to reach the top of the company's newest machine — what the outlet calls "a bit of a schlep."

Machines like this sit at the foundation of nearly every modern electronic device, from phones to data centers running artificial intelligence. ASML occupies a uniquely powerful position in the industry, supplying the equipment that the world's leading chipmakers rely on to manufacture cutting-edge processors.

The sheer price and complexity of a single tool underscore how concentrated and capital-intensive advanced chipmaking has become. When one company builds machines this rare and this expensive, the entire global supply of leading-edge chips — and the technologies that depend on them — hinges on its progress.

This matters because the future of computing increasingly rests on a handful of machines few people will ever see, and even fewer companies can build.