Key Product
NTT DATA AI cloud, IOWN optical network
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NTT (Nippon Telegraph and Telephone) is Japan's largest telecommunications company and a major investor in AI infrastructure. NTT is building domestic AI computing capacity through NTT DATA and its cloud services division, and is a key customer for Japanese AI hardware and data center suppliers. The company is developing IOWN (Innovative Optical and Wireless Network), a next-generation optical network architecture that aims to dramatically reduce data center power consumption. NTT's investment in AI infrastructure is strategically important to Japan's ambitions to build sovereign AI computing capacity independent of US hyperscalers. NTT is also a significant investor in the Rapidus foundry initiative, reflecting the Japanese government's whole-of-industry approach to semiconductor sovereignty.
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Critical path — raw silicon to deployment
The tightest single-source dependencies, in order.
QWho supplies NTT?
NTT relies on 4 upstream suppliers across the AI chip supply chain.
Vertiv (Critical power and thermal management for AI data centers), Super Micro (Leading GPU server ODM for AI data centers), Wiwynn (Major ODM server manufacturer for hyperscalers), Cisco Systems (#2 data center networking vendor; Nexus 9000 series and proprietary Silicon One ASIC (TSMC-fabbed) serve enterprise AI and telco cloud deployments).
QWhat does NTT make?
Japan's largest telco building domestic AI infrastructure
Key products NTT DATA AI cloud, IOWN optical network