Marissa Mayer is an American technology executive who currently serves as the president of Yahoo. She has a background in computer science and artificial intelligence, graduating from Stanford with advanced degrees in these fields. Prior to joining Yahoo in 2012, Mayer worked at Google for 13 years where she held several leadership roles, helping to grow Google Search. As president and CEO of Yahoo, Mayer has overseen major personnel changes and the potential sale of Yahoo's business.