The raise gives Sierra more than $1 billion to work with — capital the company says it will use to become the "global standard" for AI-powered customer experiences.

The new service, called Amazon Supply Chain Services, pits the e-commerce giant directly against UPS and FedEx.

Salesforce lets its customers lead its product roadmap with the thinking that if one enterprise customer has a problem, the others likely do too.

Microsoft gets to offer OpenAI's tech to its cloud customers and doesn't have to pay for it. "We fully plan to exploit it," Nadella said.

Google Cloud topped $20B in quarterly revenue for the first time, fueled by surging demand for AI. But capacity constraints mean it could have grown even faster.