Microsoft on Wednesday forecast disappointing growth in its cloud computing business, sending its shares down 4.5% in after-hours trading as investors worry about big spending, elusive artificial intelligence revenue and competition from cheaper AI models from China.

Microsoft said earlier on Wednesday it had added DeepSeek, the breakout Chinese artificial intelligence model, to its offerings on Azure

Microsoft Corp. said its cloud-computing business will continue to grow slowly in the current quarter as the company struggles to build enough data centers to handle demand for its artificial intelligence products.