As of 2021, the most widely used social media platform is Facebook. Launched in 2004, Facebook has grown to connect billions of users worldwide, allowing them to share content, communicate, and engage with friends and family. The platform has features like news feeds, groups, events, and marketplace, which enhance user interaction and experience. Despite increasing competition from other platforms like Instagram and TikTok, Facebook retains its status due to its vast user base and diverse functionalities. It plays a significant role in social interaction, marketing, and information dissemination in the digital age.