Long time Google executive Marissa Mayer is trading at one search company for another. On Tuesday may -- begins a new job as CE -- Yahoo!. On Monday she resigned from her VP posted Google she was the company's first female higher. Bring -- a great time humans hack but there's not a planet -- During her thirteen year ten year Mayer oversaw many of Google's most successful products she's credited with making -- simplistic look of schools homepage -- Gmail -- -- with maps now location and doing things -- very clean elegant style and that is something Yahoo! so it certainly can use Yahoo! a onetime tech darling now ranks a distant third in market share for search. Mayor will be the sixth person to occupy the CEO office in the past five years. And -- she is experienced charismatic well spoken and has the technical chops turning Yahoo! around will require a herculean efforts. She's 37. She's number -- she was number twelve any employee of Google I think she's worth quite a bit of money. She am you know what kind of better challenge could there be to me it seems like a huge opportunity this could be a total career defining moment for. In a press release from Yahoo! -- mayors said there is a lot to do and I can't wait to get started the hiring new surprise -- many tech analysts who assumed interim CEO -- Levinson would be appointed to take the Helm permanently. And Mayer's name never appeared on any short list in San Francisco I'm CB dot cnet.com. For CBS news.