Facebook is a social networking service owned by Meta, created on 4 February 2004 at Harvard University by Mark Zuckerberg and others; it was initially limited to students and opened to the public in 2006.
People can post updates, photos and videos, join groups and events, and interact through Messenger and the feed; the platform's revenue comes mainly from advertising. After the parent company was renamed Meta in 2021, Facebook remained one of its core products.