Facebook launched in 2004.
Mark Zuckerberg and fellow Harvard students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes launched the service on February 4, 2004. It was initially called TheFacebook and was available to Harvard students before expanding to other universities.
The service later opened to high-school students and then to anyone aged 13 or older with a valid email address. Facebook became the central product of Facebook, Inc., which changed its corporate name to Meta Platforms in 2021 to emphasize a broader focus on social technology and the metaverse.
The launch year is different from the corporate rebranding year. Meta Platforms is the parent company's current name, while Facebook remains the name of its social-networking service.