How Instagram built a $1 billion app in two years

With news that Facebook had purchased Instagram, tech analysts are wondering how to build a successful app in such a short time, says Bloomberg News.

The photo-sharing app had no source of income, but its creator sold it to Facebook for $1 billion. The deal was announced yesterday.

The app built a following of 30 million users, mostly on Apple’s iPhone in just two years.

Read more at Bloomberg.