Chinese AI startup DeepSeek's model led to increased scrutiny on Microsoft's AI spending.

"Investing 'very heavily' in capital expenditure and infrastructure is going to be a strategic advantage over time," Mark Zuckerberg said.

The tech giants on Wednesday talked up their AI strategies and said they are sticking with ambitious investments in the technology despite the investor panic this week over the ri

Microsoft has tested Wall Street's patience by plunking down huge amounts of cash in pursuit of profits from AI that have yet to satisfy investors.

Microsoft on Wednesday forecast disappointing growth in its Azure cloud computing business, sending its shares down more than 5% as investors worry about big spending, elusive artificial intelligence revenue and growing competition from cheaper AI models from China.