January 29, 2026 at 9:55 PM UTCUpdated on January 29, 2026 at 11:22 PM UTCAI startup Perplexity signed a $750 million deal with Microsoft Corp. to use its Azure cloud service, spreading its business beyond longtime cloud partner Amazon.com Inc.The three-year commitment will let Perplexity deploy AI models through Microsoft’s Foundry service, including those made by OpenAI, Anthropic and xAI, according to people familiar with the deal, who requested anonymity to discuss a private matter....