08:20 AM EDT 03/19/2015
Originally posted 07/17/2012 11:00AM
If the name Marissa Mayer doesn't sound familiar, Google it – that's probably what she'd want you to do, anyway.
The Silicon Valley veteran's handprint is all over the online powerhouse, from Gmail to Google Maps.
But now Mayer, 37, is trading in her executive title at Google to be the new CEO of Yahoo, it was widely announced Monday. In honor of her first day on the job at a company the tech world regards as the struggling former competitor of the place she called home for more than 10 years, here are five things to know about Yahoo's new leader:
Top 5 Most Voted Stories
Flip or Flop Host Tarek El Moussa Battling Thyroid Cancer
Will Smith Shares the Secrets to His Successful Marriage to Jada Pinkett Smith
Khloé Kardashian Quits PETA after Flour Bombing of Kim Kardashian
Rock Hudson's 'True Love' Speaks: How We Kept Our Gay Life Secret
Surprise! Bridget Moynahan Marries Businessman Andrew Frankel – See Their Romantic Wedding Photo
Top 10 News Categories
The most buzzed about stars this minute!
Treat Yourself! 4 Preview Issues
More On PEOPLE.com
Got a News Tip?
Send it to our People.com editors!