In This Story MSFT -3.42% AMZN -3.04% Microsoft ( MSFT -3.42% ) announced an array of updates to personalize and automate its Copilot AI assistant at the company’s 50th anniversary celebrations Friday. Suggested Reading Tariffs could tip the U.S. economy into crisis, according to an economist Chips mostly dodged Trump’s new tariffs — but that could change soon RFK Jr. could take aim at the food industry with coming dietary guidelines How Trump’s tariffs could make your iPhone cost $3,500 CC