Elon Musk has named a new chief executive of Twitter, just over six months after his controversial takeover of the social media company.
The billionaire said Linda Yaccarino, the former head of advertising at NBCUniversal, would oversee business operations at the site, which has been struggling to make money.
He said she would start in six weeks.
Mr Musk will remain involved as executive chairman and chief technology officer.
"Looking forward to working with Linda to transform this platform into X, the everything app," he wrote on Twitter, confirming the decision a day after he had stoked speculation by writing that he had found a new boss without revealing their identity.
Mr Musk - who bought the social media platform last year for $44bn - had been under pressure to find someone else to lead the company and refocus his attention on his other businesses, which include electric carmaker Tesla and rocket firm SpaceX.
With fewer than 10% of Fortune 500 tech companies headed by women, Ms Yaccarino will become that rare example of a woman at the top of a major tech firm, after rising steadily through the ranks of some of America's biggest media companies.