Rika Nakazawa: How NTT Is Reimagining Communications for the AI Era

The infrastructure that carries the world’s data was built for an era that is ending. Copper cables gave way to fiber optics, circuit switching yielded to packet routing, and analog voice networks evolved into broadband platforms capable of streaming video to billions of devices simultaneously. Each transition was hailed as transformative. Each, in retrospect, was incremental — a faster version of the same fundamental architecture.

What NTT is building now is not incremental. The company’s IOWN initiative — the Innovative Optical and Wireless Network — proposes to replace the electronic signal processing at the heart of modern telecommunications with an all-photonics network that transmits and processes data using light from end to end. If it succeeds, it will not merely make networks faster. It will fundamentally alter the energy economics, latency constraints, and computational possibilities of digital infrastructure. Rika Nakazawa, a senior executive at NTT who has been instrumental in shaping the company’s innovation strategy, brings that vision to the Tech for Impact Summit 2026 in Tokyo on April 26.

The Company That Built Japan’s Digital Backbone

NTT is not a startup making ambitious promises from a pitch deck. It is one of the largest telecommunications companies on earth, with annual revenues approaching $100 billion, a research and development budget that rivals those of the world’s leading technology firms, and a history that is inseparable from the development of Japan’s digital infrastructure. The company operates the fiber optic networks, data centers, and communication platforms that underpin daily life for over 120 million people. When an earthquake strikes, when a hospital connects a rural patient to a specialist in Tokyo, when a factory floor communicates with its supply chain in real time — NTT’s infrastructure is the invisible substrate making it possible.

That scale creates both obligation and opportunity. NTT cannot afford to experiment recklessly with the networks that millions depend on. But it also cannot afford to let those networks calcify. The exponential growth in data traffic driven by AI workloads, the proliferation of connected devices, and the escalating energy consumption of digital infrastructure are not distant projections. They are operational realities that NTT confronts every quarter. The company’s response has been to invest not in marginal improvements but in a architectural rethinking of how communication networks function.

IOWN: When Light Replaces Electricity

The core insight behind IOWN is deceptively simple. Today’s networks convert optical signals into electrical signals at virtually every processing node. Data arrives as light through a fiber optic cable, gets converted to electricity for routing and processing, then gets converted back to light for the next leg of its journey. Each conversion consumes energy, generates heat, and introduces latency. Multiply those conversions across billions of data packets traversing thousands of nodes, and you begin to understand why global data center electricity consumption is projected to rival that of entire nations within the decade.

IOWN eliminates those conversions. By developing photonic processors that can route, switch, and even compute using light without ever converting to electrical signals, NTT aims to create networks that consume a fraction of the energy, operate at dramatically lower latency, and scale capacity by orders of magnitude compared to current infrastructure. The company’s published targets are striking: 100 times the transmission capacity, one-200th the power consumption per bit, and end-to-end latency low enough to enable real-time interaction between humans and machines separated by thousands of kilometers.

These are not theoretical targets. NTT has been demonstrating photonic components in laboratory and field trial settings, and the IOWN Global Forum — a consortium that now includes Intel, Sony, and dozens of other technology companies — is developing the standards and specifications needed for commercial deployment. The roadmap envisions initial commercial services beginning in the mid-2020s, with full-scale deployment through the end of the decade.

For executives evaluating infrastructure investments, the implications are substantial. Networks that consume radically less energy align directly with corporate sustainability commitments and regulatory requirements. Networks with near-zero latency enable applications — remote surgery, autonomous vehicle coordination, real-time digital twins of entire cities — that current infrastructure cannot reliably support. And networks with 100 times the capacity provide headroom for the AI-driven explosion in data generation and processing that every forecaster agrees is coming.

Digital Twin Computing: Simulating the Future Before It Arrives

If IOWN provides the physical layer for next-generation communications, Digital Twin Computing provides the conceptual layer. NTT’s vision extends beyond simply moving data faster and more efficiently. The company is building toward a world where comprehensive digital replicas of physical systems — cities, ecosystems, human bodies, economic networks — can be constructed, connected, and simulated in real time.

The concept of digital twins is not new. Manufacturing companies have used digital replicas of individual machines and production lines for years. What NTT proposes is categorically different in scale and ambition. By combining the low-latency, high-bandwidth capabilities of IOWN with advanced AI and sensing technologies, the company envisions digital twins that encompass entire urban environments — integrating data from transportation systems, energy grids, weather patterns, population movements, and building infrastructure into a unified, continuously updated model.

The applications for social impact are immediate and concrete. Disaster preparedness is perhaps the most urgent. Japan experiences roughly 1,500 earthquakes per year, faces regular typhoon seasons, and has been investing heavily in resilience since the devastating 2011 Tohoku earthquake and tsunami. A digital twin of a city’s infrastructure — capable of simulating how a magnitude 7.5 earthquake would propagate through buildings, bridges, transportation networks, and emergency response systems — transforms disaster planning from a static exercise in historical analysis to a dynamic, scenario-driven discipline. Emergency services can rehearse responses to events that have not yet occurred. Urban planners can identify vulnerabilities before they become casualties.

The same logic applies to climate adaptation. As sea levels rise and weather patterns shift, cities need to understand how their infrastructure will perform under conditions that have no historical precedent. Digital twin simulations, running on infrastructure fast enough to process city-scale data in real time, provide a tool for anticipatory governance that current technology cannot deliver.

Healthcare offers another compelling case. NTT Research, the company’s network of advanced research laboratories spanning physics, cryptography, and medical informatics, has been exploring how digital representations of biological systems can accelerate drug discovery, personalize treatment protocols, and extend the reach of specialist medical expertise to underserved communities. In a country where rural depopulation is creating healthcare deserts — communities where the nearest specialist may be hours away — the combination of telemedicine, real-time patient monitoring, and AI-assisted diagnostics running on low-latency networks is not a convenience. It is a lifeline.

From Connectivity to Intelligence Platform

Nakazawa’s perspective reflects a broader transformation in how telecommunications companies understand their role. For decades, telecoms were utilities — providers of pipes through which other companies’ products and services flowed. The value they captured was proportional to the volume of data they carried, a commodity business that compressed margins and limited strategic differentiation.

NTT is repositioning itself as something fundamentally different: an intelligence platform. The company’s investments in AI, quantum computing research, photonic processing, and digital twin technologies are not extensions of its telecommunications business. They are the foundation of an integrated capability that spans physical infrastructure, computational intelligence, and application services. The network is not merely a conduit for data. It is, increasingly, a participant in how that data is generated, processed, and applied.

This repositioning has significant implications for the innovation ecosystem. Companies building AI applications, smart city solutions, autonomous systems, or precision medicine platforms have historically treated network infrastructure as a given — a commodity input that they neither controlled nor particularly thought about. As applications become more demanding in their latency, bandwidth, and reliability requirements, the infrastructure layer becomes a competitive differentiator rather than a commodity. The organizations that build relationships with next-generation infrastructure providers now will have architectural advantages that latecomers cannot easily replicate.

Japan’s Digital Transformation Strategy

NTT’s initiatives do not exist in a vacuum. They are deeply intertwined with Japan’s national strategy for digital transformation — a priority that has accelerated significantly since the establishment of the Digital Agency in 2021. The country faces a unique combination of pressures: an aging and shrinking population that demands productivity gains through automation, a geographic vulnerability to natural disasters that requires advanced resilience infrastructure, and a global competitive landscape in which digital capability increasingly determines economic relevance.

The Japanese government’s vision for Society 5.0 — a “super-smart society” that integrates cyber and physical space — depends on precisely the kind of infrastructure that NTT is developing. Smart cities, autonomous transportation, remote healthcare, precision agriculture, and distributed energy management all require networks that are faster, more reliable, more energy-efficient, and more intelligent than what exists today. NTT, as the country’s largest telecommunications provider and one of its most significant R&D investors, is the backbone of that national ambition.

For international leaders seeking to understand Japan’s technology trajectory, NTT’s strategy is an essential reference point. The company’s partnerships, standards-setting activities, and infrastructure investments will shape the digital environment in which every business operating in Japan — and increasingly across the Asia-Pacific region — will function.

What She Will Discuss at T4IS 2026

At the Tech for Impact Summit, Nakazawa will address how next-generation communications infrastructure enables — and in some cases, creates — pathways for social impact at scale. The conversation will move beyond technical specifications into strategic territory: what changes when the infrastructure constraints that have limited telemedicine, disaster simulation, urban planning, and AI deployment are removed? What new forms of collaboration become possible when latency and energy consumption are no longer binding constraints? And how should leaders across sectors position themselves as the physical layer of the digital economy undergoes its most significant transformation in decades?

She joins a speaker roster assembled to examine these questions from complementary angles. Former Minister Taro Kono brings the policy architecture of Japan’s digital transformation. Cardano founder Charles Hoskinson offers the decentralized infrastructure perspective. GLOBIS founder Yoshito Hori delivers the keynote on entrepreneurial leadership. Kathy Matsui, general partner at MPower Partners, speaks to impact-driven venture capital. SmartNews CEO Ken Suzuki addresses the intersection of AI and democratic discourse. Jesper Koll of Monex Group anchors the financial markets narrative. Sota Watanabe of Startale and Ken Shibusawa of Commons Asset Management contribute perspectives on Web3 infrastructure and multi-generational stewardship.

Nakazawa’s contribution grounds these conversations in physical reality. Every AI model, every blockchain transaction, every telemedicine session, every smart city sensor — all of it runs on communications infrastructure. The leaders who understand what that infrastructure is becoming, and who build their strategies accordingly, will have a decisive advantage in the decade ahead.

The Infrastructure Imperative

For the C-suite executives and institutional leaders convening at the Tech for Impact Summit, the evolution of communications infrastructure is not a technical footnote. It is a strategic variable that will determine which ambitions are achievable and which remain aspirational.

Consider the enterprise implications. Organizations investing in AI at scale are discovering that model performance depends as much on data infrastructure as on algorithmic sophistication. Companies pursuing sustainability commitments are finding that measuring, reporting, and reducing their environmental impact requires sensor networks, real-time analytics, and computational resources that strain current infrastructure. Governments pledging digital inclusion are confronting the reality that connecting underserved communities requires networks that are not only fast but affordable to operate — a criterion where IOWN’s energy efficiency becomes decisive.

The transition from electronic to photonic infrastructure will not happen overnight. But it will happen, driven by the same forces — energy economics, performance requirements, data volume growth — that drove every previous network transition. The organizations that understand this trajectory now, and that begin building relationships, strategies, and architectures aligned with it, will not merely adapt to the next era of communications. They will help define it.

NTT is making a bet that the future of communications is not just faster connectivity but intelligent infrastructure capable of helping humanity address its most pressing challenges. Nakazawa’s presence at the summit offers a rare opportunity to hear that case made by someone operating at the intersection of technological capability and strategic vision.

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The Tech for Impact Summit 2026 takes place on April 26 in Tokyo. Seats are limited and allocated by invitation. Request your invitation to join Rika Nakazawa and other global leaders shaping the future of technology, infrastructure, and impact.