Enterprise spending on cloud infrastructure services grew by more than $43 billion Year-on-Year (YoY) in Q2 2025, reaching $143bn, according to new research from Synergy Research Group.

Synergy said this is the 11th consecutive quarterly increase in the YoY growth rate, with the market doubling in size over that time. Generative AI is the main driver of this growth.

– Synergy Research Group

Amazon maintained a lead in the market, with a 28 percent share. Microsoft and Google also sustained a high market share, with 20 percent and 15 percent, respectively.

Synergy also tracked a “tier two” of cloud providers, which includes CoreWeave, OpenAI, Oracle, Crusoe, Nebius, Anthropic, and Nscale, all of which saw high growth rates.