Mayer, 37, edged out front-runner and acting Chief Executive Ross Levinsohn to become Yahoo's third CEO in a year. She hopes to stem losses to Google and Facebook Inc - which her high-profile predecessors failed to do. Her hiring signaled the Internet company is likely to renew its focus on Web technology and products rather than beefing up online content.
Mayer, Google's 20th employee and first female engineer, has led a number of its businesses, and was credited for envisioning the clean, simple Google search interface still in use today, a major selling point for Web surfers.
Also known for her love of fashion and a regular on the society pages, she joins the extremely thin ranks of female Silicon Valley CEOs and told Reuters that she was immediately interested when Yahoo's board reached out to her in mid-June.
"This is a very competitive and a tough space. I don't think that success is by any means guaranteed," she said. "My focus is always end-users, great technology and terrific talent."
Shares of Yahoo, worth less than half their value during its dotcom heyday, gained 2 percent to $15.97 in after-hours trading.
Source: Reuters