Linda Yaccarino to replace Elon Musk as Twitter CEO. Here's who she is.

Elon Musk has tapped Linda Yaccarino, until this week the head of advertising at NBCUniversal, to replace him as CEO of Twitter, he announced in a tweet Friday. 

"@LindaYacc will focus primarily on business operations, while I focus on product design & new technology," the tweet read, in part. 

Yaccarino made her first public comments about her new role over the weekend. On Twitter, she responded to Musk's announcement, saying, "I've long been inspired by your vision to create a brighter future. I'm excited to help bring this vision to Twitter and transform this business together!"