Most AI charts obsess over model sizes and GPU flops, but almost none show the metal that has to carry all that compute: the switches, servers and densely wired racks that turn power and chips into something hyperscalers and defense clients can actually run at scale.

Sitting in that unglamorous layer is a manufacturer that began life as an IBM spin‑off and has since reinvented itself as a specialist contractor for AI data centers, assembling custom systems for cloud giants, chip makers and government programs instead of pushing a consumer brand. Over the last four years, its revenue has climbed from roughly 5.6 billion to more than 12 billion dollars, net income has compounded by several dozen percent a year and returns on invested capital have moved into territory investors usually associate with software, not with factories and contract manufacturing.

Top points of analysis

• The company has shifted from a traditional EMS assembly plant over the past decade to an engineering partner for…