An employee walks past servers in the Facebook data center in Forest City, North Carolina.
A server tray in Facebook's Forest City, North Carolina, data center, 2010
Chinese President Xi Jinping, left, talks with Facebook CEO Mark Zuckerberg, right, during a gathering of CEOs and other executives at Microsoft's main campus September 23, 2015 in Redmond, Washington.
Inside Facebook's data center in New Mexico
Rendering of the future Facebook data center in Huntsville, Alabama
A rendering of Facebook's data center in Los Lunas, New Mexico
Facebook's Voyager optical transponder