A Note from Mark Zuckerberg

He has played so many central roles at Facebook — starting as an engineer on our original News Feed, building our first HR teams and helping to define our mission and values, leading our product and design teams, running the Facebook app, and most recently overseeing the strategy for our family of apps. Along the way, Chris has helped train many great leaders who are now in important roles across the company — including some who will now take on bigger roles in our new product efforts. Chris has also done great work in many roles, including running our business development team, leading Internet.org, which has helped more than 100 million people get access to the internet, and most recently at WhatsApp, where he has helped define the business model for our messaging services going forward.

Source: newsroom.fb.com