Instagram is #1 photo-sharing social platform founded in 2010. It had 1 million users in just 2 months after its launch and kept on growing ever since. It was later acquired for $1 million by Facebook in April 2012.
Instagram knew how to constantly improve itself adding new features and new photo effects. After becoming available on Android phones and very recently adding stories, Instagram may have made a place for itself that will last for many years to come.
Check out this Infographic from DSIM, which will take you through the comprehensive journey of Instagram.