Yahoo! has appointed a new CEO, its third in twelve months. Marissa Mayer will join the web giant from rival Google, as the new president and CEO.
Mayer replaces Scott Thompson, who resigned in May after allegations he had put a false qualification on his CV, and Carol Bartz, who was fired in September 2011.
The new CEO has a computer science background, and joined Google as its 20th employee. Mayer worked on a number of Google's key products including search and the homepage. She was most recently in charge of for Local, Maps, and Location Services for Google. At Yahoo! Mayer will be charged with enhancing the company's product offerings.
Mayer said in a statement: "I am honoured and delighted to lead Yahoo!, one of the internet's premier destinations for more than 700 million users. I look forward to working with the Company's dedicated employees to bring innovative products, content, and personalized experiences to users and advertisers all around the world.
"Yahoo!'s products will continue to enhance our partnerships with advertisers, technology and media companies, while inspiring and delighting our users. There is a lot to do and I can't wait to get started," Mayer said.
Yahoo! Co-Founder David Filo said: "Marissa is a well-known, visionary leader in user experience and product design and one of Silicon Valley's most exciting strategists in technology development. I look forward to working with her to enhance Yahoo's product offerings for our over 700 million unique monthly visitors."