Marissa Mayer has been all over the news lately after jumping ship from Google to become Yahoo!'s CEO. Tech analyst Andrew Tonner thinks this is a great move for Yahoo!, as Mayer is a talented, product-driven choice. For Yahoo! to succeed, investors should expect big changes.

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Andrew Tonner and Austin Smith have no positions in the stocks mentioned above. The Motley Fool owns shares of Google. Motley Fool newsletter services recommend Google and Yahoo! Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.