AI-Driven Spending Pushes Global Technology Demand to Record Highs in Q4
Cloud Services Show Remarkable Growth, Accounting for 66% of Total Market Activity
The latest ISG Index reveals that global demand for technology services surged to unprecedented levels last quarter—driven almost entirely by cloud computing and AI-led solutions. Total annual contract value (ACV) for technology outsourcing contracts hit $34.3 billion in Q4, marking a 16% year-over-year rise, with cloud-based software and services (XaaS) as the standout performer. Notably, this is the sixth straight quarter of double-digit combined market growth, even as overall momentum has moderated slightly compared to previous periods.
Infrastructure-as-a-Service and AI Adoption Power Industry Expansion
Infrastructure-as-a-Service (IaaS) was the clear engine of growth, with Q4 ACV leaping 32% to $18.5 billion. Software-as-a-Service (SaaS) also contributed, rising 6% to $4.9 billion. The pressing demand for AI—especially as organizations modernize data platforms and build new analytics capabilities—continues to fuel expansion in both areas. As a result, XaaS accounted for 66% of combined market ACV for the year, up from 60% previously. Managed services, by contrast, held steady at $10.9 billion in Q4, essentially flat year-over-year—the second consecutive quarterly decline not seen since early 2020.
| Segment | Q4 2025 ACV ($B) | YoY % Change |
|---|---|---|
| Combined Market | 34.30 | +16% |
| XaaS | 23.40 | +26% |
| IaaS | 18.50 | +32% |
| SaaS | 4.90 | +6% |
| Managed Services | 10.90 | -0.3% |
| ITO | 7.80 | -6% |
| BPO | 2.20 | +13% |
| ER&D | 0.92 | +28% |
Concentration in Cloud and AI Signals a New Market Phase
For all of 2025, technology ACV reached $127.4 billion—a new annual record, up 18% from the prior year, and the strongest performance since 2021. Within cloud-based services, IaaS ACV soared 33% to $64.7 billion while SaaS jumped 16% to $19.3 billion. The growth trend is sharply concentrated: managed services ACV eked out a modest 1.3% annual gain (the slowest since 2020), even as engineering, research, and development (ER&D) services surged 35% for the year.
| 2025 Full-Year Market Segment | ACV ($B) | YoY % Change |
|---|---|---|
| Combined Market | 127.40 | +18% |
| XaaS | 84.00 | +29% |
| IaaS | 64.70 | +33% |
| SaaS | 19.30 | +16% |
| Managed Services | 43.40 | +1.3% |
| ITO | 32.50 | +2.4% |
| BPO | 7.30 | -14% |
| ER&D | 3.60 | +35% |
Industry Dynamics: Healthcare, Pharma, and Engineering Outperform
While many industry segments demonstrated strength, healthcare and pharma nearly doubled their managed services spend over the year. Energy, transportation, and retail also posted double-digit fourth-quarter gains. In managed services, contract duration extended 14% and total contract value increased 8%—a signal that companies are pursuing broader transformation agendas, even if individual deal flow in segments like IT outsourcing softened.
Looking Ahead: AI and Cloud Continue to Redefine the Landscape
ISG forecasts that in 2026, cloud-based software and services (XaaS) will see another 20% revenue jump, far outpacing managed services’ projected growth of just 2.1%. The expansion is driven by continuing cloud migration, aggressive AI adoption, and greater cybersecurity investment. However, evolving macro risks—from policy changes and global economic uncertainty to leadership transitions at the U.S. Federal Reserve—are encouraging companies to favor phased, strategic investments over sweeping commitments.
Key Takeaway: AI Acceleration and Cloud Migration Remain Central
The ISG report makes it clear: AI and cloud are not just trends—they are now the primary forces shaping technology contracts and investment priorities. Companies that adapt quickly to these shifts could capture significant efficiencies and competitive advantage in 2026 and beyond. As ISG’s leadership puts it, we are entering a phase of broadscale transformation that’s likely to challenge historical business models and reward technological agility.
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