Elon Musk has officially announced that Linda Yaccarino, formerly NBCUniversal’s top advertising sales exec, will take the helm as Twitter’s new CEO. Musk has further revealed that Yaccarino will primarily focus on business operations while he will focus more on product design and new technology. Yaccarino will join as Twitter CEO officially in six weeks’ time. Musk’s deal for Twitter was valued at $44 billion but the tech billionaire, who also heads Tesla and SpaceX, has said he now values the company at $20 billion. He recently officially renamed the company “X Corp.” as the parent of Twitter. 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.