Microsoft has entered into a five-year, approximately $9.7 billion agreement to purchase AI cloud capacity from IREN, securing access to Nvidia's advanced accelerator systems. The deal makes Microsoft the Australian company's largest customer and is a significant move to keep pace with the surging demand for artificial intelligence infrastructure. This collaboration aims to expand Microsoft's cloud capabilities for intensive AI workloads. The announcement underscores Microsoft's aggressive investment strategy to bolster its AI and cloud services. To fulfill the agreement, IREN will acquire the necessary GPUs and related equipment from Dell Technologies for $5.8 billion. In market reaction, IREN's shares saw a substantial surge in pre-market trading, while Microsoft's shares rose slightly following the news.