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No matter what industry you’re in or where you are in the world, when the boardroom door closes, AI is on the agenda. These conversations are, however, mostly focused on the application layer — what AI can do, not what’s needed to run it successfully. 

As the AI boom accelerates, one topic that’s often left off the table deserves equal attention: infrastructure. For organizations that are moving from AI experimentation to enterprise scale, this is where complexity begins to rear its head.

The constraint: Power, heat and scale

AI demands resource-intensive environments. In many cases, running serious AI workloads in a conventional data center simply isn't viable.

A standard server rack draws between 2kW and 10kW of power. An AI-optimized rack — packed with the GPUs needed to run AI workloads — can draw close to 100kW. That’s 10 times as much power.

According to the US Department of Energy, “by 2028, more than half of the electricity going to data centers will be used for AI. At that point, AI alone could consume as much electricity annually as 22% of all US households.”

More power generates more heat, triggering a cascading effect that’s beyond the scope of traditional air-containment cooling. It requires liquid or fluid cooling that circulates directly through the rack and is carried away to be cooled again. Data centers that rely on outdated cooling systems and use water inefficiently can cause AI models to consume millions of liters of water.

Hybrid AI: The smart default

When organizations move beyond experimenting with AI, they therefore face a challenge: Where should it run?

Fortunately, there is a model that’s both elegant and efficient: hybrid AI.

Low-risk workloads such as drafting assistants or productivity tools work well on large external platforms. The data involved is generally benign, and the scale these platforms provide is difficult to replicate independently.

But not every workload carries the same risk profile. A fraud-detection model built on years of customer transaction data operates under entirely different considerations. Where that data goes and who governs it are key concerns. These workloads belong in on-premises or edge environments — where your organization owns the infrastructure, governs the data and answers to no one else for how it is used.

Using this model, you match each AI workload to the environment best suited to its sensitivity, scale requirements and governance obligations. Some of these workloads run in distributed global environments, while others must stay close to home.

This architecture isn’t new; it closely mirrors the hybrid cloud model that organizations have been running for years.

Sovereign AI: Why control has become a strategic requirement

Hybrid models introduce flexibility, and with it, a level of risk most organizations are only beginning to assess.

Data moves through prompts, pipelines and outputs, often into systems outside your organization’s direct governance. In many cases, exposure doesn’t come from a breach but from normal usage. When your employees feed sensitive data into an external large language model (LLM), the LLM can retain the data, use it to train future versions of itself, or process it under terms your organization never negotiated. You may not even know it has happened. That’s the nature of data leakage in an AI context — it’s incremental, difficult to pinpoint and hard to reverse.

The risk doesn’t stop there. Access to AI hardware is subject to trade restrictions. A foreign government can restrict or withdraw access to LLM platforms at short notice, leaving organizations that depend on such access with no fallback. For state entities and regulated organizations, running AI in an environment governed by frameworks outside your jurisdiction becomes a question of operational continuity.

Using hybrid AI, you choose where to run your workloads. Sovereign AI enables organizations and government entities to maintain control and avoid being locked out of infrastructure. You keep data, models and infrastructure within defined boundaries and governed locally. For a growing number of organizations, this level of control is no longer optional.

AI-ready data centers: Purpose-built and designed for scale

Building dedicated AI infrastructure from the ground up is expensive and carries risk. Resource requirements alone, such as utility costs and cooling, make even the most modest AI deployments a significant undertaking — not to mention the daunting task of managing it. On the other hand, relying entirely on an external environment means accepting the governance trade-offs that come with it.

Purpose-built, AI-ready data centers fill that gap.

Our Johannesburg 1 Data Center is our flagship facility in South Africa. Built with 12MW of IT load capacity, it’s capable of supporting high-density AI workloads locally, with the high power density, modern cooling systems and resilient connectivity that traditional environments often lack. And because this data center is a colocation environment, you get the infrastructure you need without the capital commitment, operational burden or cost associated with making existing on-premises or legacy data centers fit for purpose and attempting to manage these yourself.

I’ve been in this business long enough to know that today’s boardroom conversations will seem obvious five years from now. Focusing on your AI infrastructure now will set you up to succeed when you run it at scale under real-world conditions.

WHAT TO DO NEXT
Learn more about how NTT DATA’s AI Infrastructure Services can help you build the foundation to run AI at scale.