New data centers are being built at a faster rate than any other real estate asset class globally, data from JLL’s Global Real Estate Outlook shows.

Completions are set to reach a new peak globally in 2025, exceeding the previous four years. Yet with capacity on track to grow at a 15% CAGR over the next two years, demand for critical data center infrastructure continues to outstrip supply.

“The current global data center expansion primarily focuses on previously underserved markets — the huge tier-one markets that never were,” says Dr. Glen Duncan, Data Center Research Lead, APAC, JLL.

Among the top cities with the highest completions expected this year are emerging hub markets such as Mumbai, Madrid, and Atlanta that have developed more recently than established data center hubs.

While the rise of artificial intelligence (AI) has accelerated development, exponential growth in data center infrastructure was already underway to support demand from legacy cloud-based applications and workloads, Duncan explains.

“The completions coming through this year were planned and approved prior to the AI boom, which means the market’s undersupply issue will likely persist regardless of recent AI advancements.”

A confluence of positive market conditions is fueling the pace of growth in these secondary markets, says Daniel Thorpe, Head of EMEA Data Center Research, JLL.

“The growth of digital economies is a clear driver, but supportive government policies and enhanced subsea cable connectivity are also crucial factors driving demand,” he says.

In many emerging markets, the launch of new subsea cables will significantly enhance connectivity with other regions, potentially attracting global data center operators.

Until supply catches up to demand, hyperscalers are leasing more space from colocation providers as a temporary solution to accelerate their speed to market, according to Duncan.

“This shift reflects the widening gap between demand and the availability of build-to-suit options, constrained by factors like limited land and lengthy construction timelines,” he says.

While the past few years have witnessed delays in data center developments due to supply chain disruptions and project backlogs, Thorpe is sanguine about the prospects of the global data center landscape.

“We're starting to see a resurgence in new supply and planning decisions in recent months, with projects slated for completion and commencement this year,” says Thorpe. “Furthermore, the imminent arrival of new subsea cables in development will provide the critical connectivity needed to drive the development of new data centers globally.”