The global technology services market is undergoing a massive structural shift as enterprise demand for artificial intelligence capacity forces a pivot toward heavy infrastructure investment. According to the latest ISG Index™ report, third-quarter annual contract value (ACV) for the combined global market—encompassing managed services alongside cloud-based infrastructure and software—surpassed the $50 billion threshold for the first time, reaching a record $52.5 billion. This represents a 63 percent increase, marking the highest quarterly growth rate ever recorded by ISG. This surge is not a broad-based expansion across all IT categories; rather, it is a highly concentrated explosion in cloud-based services, specifically driven by the urgent requirement for compute, storage, and AI-ready environments. While traditional managed services continue to grow, they are doing so at a significantly slower pace, highlighting a widening gap between legacy outsourcing and the high-velocity capital requirements of the AI era.
IaaS and SaaS Capture Dominant Market Share
The primary engine behind this record-breaking quarter is the unprecedented acceleration in Infrastructure-as-a-Service (IaaS) spending. Driven by the ongoing AI infrastructure boom, IaaS ACV skyrocketed 115 percent to reach $35.5 billion. This massive influx of capital is closely linked to hyperscalers committing extraordinary levels of investment to build out new capacity to meet enterprise demand. Alongside IaaS, Software-as-a-Service (SaaS) also showed strength, advancing 21 percent to $5.6 billion—its most robust growth in over four years. When combined, these two cloud-based segments reached $41.2 billion, accounting for 78.5 percent of the total combined market ACV, which is the highest share ever recorded.
This concentration of spending suggests that enterprises are prioritizing the foundational layers of the AI stack. ISG’s chief AI officer, Steve Hall, notes that the infrastructure cycle appears to have significant room to run, as the market has not yet reached a clear peak. Interestingly, the anticipated "SaaSpocalypse"—a theory of widespread SaaS disruption—has not materialized. Instead, the data suggests that existing software platforms are positioning themselves as primary distribution layers for enterprise AI by embedding these capabilities directly into established workflows and data environments.
Managed Services Face Slowing Growth and Selectivity
In stark contrast to the cloud explosion, the managed services sector is experiencing a period of much more modest expansion. Third-quarter managed services ACV rose only 2.1 percent to $11.3 billion, a rate that aligns with the steady, low-single-digit growth seen over the last year. While the total ACV reached a record high, the actual volume of contracts awarded was down 8 percent from the previous year's record. This divergence suggests that enterprises are becoming increasingly selective, concentrating their budgets on fewer, larger, and more strategic commitments rather than broad-based outsourcing.
The internal composition of managed services also reveals significant pressure from AI-driven shifts. IT outsourcing (ITO) ACV remained essentially flat at $8.4 billion, with application development and maintenance (ADM) falling 8 percent. This decline likely reflects a shift in focus toward AI-driven process redesign, which sits upstream from traditional ADM. Similarly, engineering, research and development (ER&D) services saw a 3 percent decline to $814 million, as integration complexity and legacy technology issues slow the adoption of AI in software engineering. While Business Process Outsourcing (BPO) rose 12 percent to $2.1 billion, the overall trend indicates that incremental investment is flowing toward infrastructure and platforms rather than traditional managed-services contracts.
Key Takeaways
- Combined global market ACV reached a record $52.5 billion in Q3, a 63 percent increase year-over-year.
- IaaS spending surged 115 percent to $35.5 billion, fueled by demand for AI compute and storage capacity.
- ISG has raised its 2026 growth forecast for cloud-based XaaS to 60 percent, up from 30 percent in the previous quarter.
TechInsyte's Take
In our view, the ISG data confirms a fundamental decoupling of the technology services market. We are witnessing a "two-speed" economy where infrastructure providers are capturing the lion's share of enterprise AI budgets, while traditional managed service providers face a growing struggle to maintain growth economics. The fact that IaaS is expected to grow 80 percent by 2026—while managed services is forecasted at a mere 2.1 percent—is a massive signal for C-suite leaders. This isn't just a cyclical spike; it is a structural reallocation of capital. For service providers, the challenge is no longer just about maintaining uptime or managing legacy systems; it is about proving relevance in an ecosystem where the value has migrated from the "hands-on-keyboard" management of software to the massive-scale provisioning of AI-ready infrastructure.
Questions & Answers
How is AI impacting the growth trajectory of traditional managed services?
AI is driving a shift in investment away from traditional outsourcing and toward infrastructure, platforms, and software. This is causing sectors like application development and maintenance (ADM) and ER&D to struggle or decline as enterprises prioritize AI-driven process redesign and infrastructure capacity over legacy maintenance.
What does the current SaaS market trend suggest about AI integration?
The data suggests that rather than being disrupted by AI, established SaaS platforms are acting as critical distribution layers. By embedding AI directly into existing workflows and data environments, these companies are maintaining their relevance and capturing AI-driven demand.
Why has ISG significantly increased its XaaS growth forecast for 2026?
ISG raised its cloud-based XaaS forecast from 30 percent to 60 percent due to the massive scale of hyperscaler investment and the intense demand for AI capacity. Specifically, IaaS is expected to see an 80 percent growth rate, reflecting the ongoing infrastructure boom.
What does the decline in managed services contract volume indicate about enterprise procurement?
The combination of record ACV alongside lower contract volumes suggests that enterprises are becoming more strategic and selective. Instead of many small contracts, they are concentrating their spending on fewer, larger, and more high-impact strategic commitments.
Source: ISG
