AI 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. Most Read from Bloomberg“We are excited to partner with Microsoft for access to frontier models from X, OpenAI and Anthropic,” a Perplexity spokesperson said. Perplexity hasn’t shifted spending from Amazon Web Services, long the startup’s main cloud provider, as part of the Microsoft deal, the spokesperson added. Big companies typically rent cloud services from multiple partners, both to get access to unique services and to limit their reliance on any single vendor. Perplexity built much of its business on AWS, using Amazon’s Bedrock service to access Anthropic models for Perplexity’s search engine.