Facebook is a social network that allows users to connect with friends and family and make new connections with people with similar interests. It was founded in 2004 by Mark Zuckerberg and a group of his college classmates and is now one of the largest and most influential social media platforms in the world.

Facebook allows users to create a personal profile, add other users as friends and share messages, including photos and videos. It also offers a wide range of features for businesses, such as the ability to create a business page, promote products and services, and interact with customers.

In addition to its core features, Facebook also has a number of subsidiary apps and services, including Instagram, WhatsApp and Oculus VR. These apps allow users to share photos, send messages and experience virtual reality, for example.