If you’ve seen the movie “The Social Network” you remember Dustin Moskovitz as the kid from Jurassic Park who did little more than sit in a corner and code. Like most other things in the movie, that wasn’t exactly true. Or– yunno– true at all.

While still close friends with Mark Zuckerberg, Moskovitz has been gone from day to day management of Facebook since 2008. But we spoke with him just before Facebook’s IPO, which was poised to make him the world’s youngest billionaire.

Moskovitz made the surprising move to leave Facebook pre-IPO to co-found Asana, a company that seeks to make communication and collaboration within companies more seamless. He says telling Zuckerberg he was quitting was one of the hardest things he’s ever done.

In this ...