Here’s a breakdown of Gartner’s new $5.3 trillion global spending projections for communication services, data center systems, devices, software and IT services markets.

Worldwide spending on IT will reach $5.43 trillion in 2025 with a slowdown in software and services spending growth offset by an increase in AI-related infrastructure.

The five largest IT markets on a global basis are communication services, data center systems, devices, software and IT services, according to new data from market research firm Gartner.

With Gartner projecting global IT spending to reach $5.43 trillion in 2025, it would represent a roughly 8 percent increase compared to $5.04 trillion in 2024.

“While there is a business pause on net-new spending due to a spike in global uncertainty, the effect is subsumed by ongoing AI and generative AI digitization initiatives,” said Gartner analyst John-David Lovelock in an email to CRN. “For instance, both software and services spending growth in 2025 is expected to slow down due to this ‘uncertainty pause,’ but spending in AI-related infrastructure, such as data center systems, continues to surge.”

[Related: The 10 Hottest Agentic AI Tools And Agents Of 2025]

Here are the five biggest tech markets in 2025 and how much each industry expects to generate in sales this year, according to Gartner data.

https://www.crn.com/news/cloud/2025/5-biggest-it-markets-in-2025-as-spending-hits-5-4-trillion-gartner