Sach336699 / Shutterstock.com The artificial intelligence (AI) boom relies on more than just chips and software -- it's built on robust physical infrastructure that handles massive data loads, power demands, and connectivity. As tech giants like Nvidia (NASDAQ:NVDA) and Microsoft (NASDAQ:MSFT) expand data centers to fuel AI growth, a quieter group of companies provides essential components. Amphenol (NYSE:APH), Vertiv (NYSE:VRT), and Quanta Services (NYSE:PWR) supply interconnects, cooling systems, and po ...