Mark Elliot Zuckerberg is an American programmer and businessman who co-founded Facebook and its parent company, Meta Platforms. He serves as the CEO, chairman, and controlling shareholder. Zuckerberg is known for creating Facemash, a controversial Harvard site that ranked student photos, which led to the development of Facebook with college friends. In 2021, Facebook rebranded as Meta to focus on the metaverse and virtual reality. Born in White Plains, New York, he attended Harvard University before leaving to pursue Facebook full-time. Under his leadership, Meta has grown into a global technology company with billions of users.