Facebook is a social networking website and platform that allows users to create personal profiles, share information, connect with friends and family, join groups, and communicate with each other. Founded in 2004 by Mark Zuckerberg and his college roommates, Facebook has grown to become one of the largest and most popular social media platforms in the world, with over 2.9 billion monthly active users as of 2021.

Users can share text posts, photos, videos, and links on Facebook, as well as like, comment, and share content from others. Facebook also offers various features such as Facebook Marketplace, Facebook Watch, and Facebook Gaming.

In addition to its social networking features, Facebook also offers advertising and marketing tools for businesses and organizations, allowing them to create and target ads to specific audiences.

Facebook has been the subject of controversy and criticism over issues such as privacy, fake news, and the spread of misinformation on the platform. The company has also faced regulatory scrutiny and legal challenges related to its handling of user data and its impact on competition in the tech industry