Social media notifications are alerts that inform users about activities related to their accounts on platforms like Facebook, Instagram, or Twitter. These notifications can include likes, comments, messages, friend requests, and mentions, helping users stay updated on interactions and engagement with their content. Users can customize their notification settings to control what alerts they receive and how they are delivered, such as through push notifications on their smartphones or emails. This feature enhances user experience by keeping them connected and informed about their social interactions in real-time.