What to know about Twitter's new CEO Linda Yaccarino

 NEW YORK (AP) — Elon Musk is welcoming a veteran ad executive to the helm of Twitter, the social media site the billionaire Tesla CEO had been running since he bought it last fall. 

Here's what to know about Yaccarino. 

VETERAN AD EXEC 

Yaccarino, 60, has worked as an advertising executive for decades. She came to NBCUniversal in 2011, just as Comcast was completing its merger with NBC, and oversaw integrating the companies' ad sales platforms. There, her most recent title was chairman, advertising and client partnerships. She oversaw all market strategy and advertising revenue, which totaled nearly $10 billion, for NBCUniversal’s entire portfolio of broadcast, cable and digital assets.