Mark Zuckerberg and Kevin Systrom on What Really Happened When Facebook Bought Instagram - Vanity Fair
www.vanityfair.com/business/2013/06/kara-swisher-instagram
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
The sale of Instagram to Facebook for a cool billion in the spring of 2012 was the ultimate Silicon Valley fairy tale: 18 months from launch to offer. But, for co-founder and C.E.O. Kevin Systrom, it was more of a roller-coaster ride, with several missed opportunities, at least two aha moments, and one major reboot.