Nebius Group has inked a landmark agreement with Microsoft worth $17.4 billion over five years to supply GPU-powered AI infrastructure, with an option to expand to $19.4 billion.

The deal underscores corporate demand for advanced AI compute capacity, and comes as Microsoft continues investing heavily in AI infrastructure.

Nebius, based in Amsterdam, will deploy capacity from its upcoming Vineland, New Jersey data center starting later this year.

Following the announcement, Nebius shares surged—jumping approximately 47% in after-hours trading—reflecting investor enthusiasm about its strategic positioning in AI cloud services, CNBC has reported.

This partnership could accelerate Nebius’s growth and strengthen its competitive stance against rivals like CoreWeave.