Instagram is a photo sharing app created in 2010 and purchased by Facebook in 2012. It has over 300 million daily and 500 million monthly active users. Users can download the app to create an account, post photos and videos, and follow other users. Popular features include Stories, which allow temporary photo and video posts, and Live, which enables live video streaming. Users can also tag locations, add hashtags, and engage with other users through likes and comments.