Gartner Forecasts Worldwide AI-Optimized IaaS Spending to Grow 96% Through 2026

Spending by organizations in Thailand on AI-optimized infrastructure as a service (IaaS) is projected to exceed THB1.8 billion in 2026, a 207.3% increase from 2025. This is expected to reach almost THB3.2 billion in 2027, driven by continued enterprise demand for infrastructure to support AI across applications and workflows.

"This growth is driven by continued demand for infrastructure to support large language model (LLM) training and the rapid operationalization of AI across enterprise applications and workflows," said Hardeep Singh, Sr Principal Research Analyst at Gartner.

The market is forecast to sustain high growth and reach $66 billion in 2027 (see Table 1).

Inference Workload Spending to Surpass Training Spending in 2026

The rise of agentic AI amplifies compute intensity through multistep, autonomous execution, making inference the dominant consumption model and positioning AI-optimized IaaS as a critical enabler of enterprise AI strategies.

"As organizations shift from model development to production-scale deployment, fine-tuned and domain-specific models (DSMs) are increasingly integrated into customer-facing and operational systems, requiring continuous, real-time execution rather than periodic training," said Singh. "This shift is accelerating the cloud consumption patterns and creating sustained demand for AI-optimized infrastructure."

In 2026, global spending on inference ($23.3 billion) will surpass that of training ($19 billion). Fifty-five percent of AI-optimized IaaS spending is forecast to support inference in 2026 and is set to reach 59% in 2027. The growing share of inference workloads is expected to reshape cloud investment priorities.

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