It started with Google: After the company decided to release its employee diversity statistics last May, some nudging from activist groups helped led a slew of other tech giants to follow. Before long, Apple, Facebook, Twitter and others were all giving a look at their diversity—or rather, lack of diversity. But there’s a big difference between admitting the problem exists and fixing it.

TRYING A TING: Facebook's Head of Diversity: Maxine Williams Maxine Williams is very visible on the Facebook campus. And not just because she's one of the few black people working here. With its ambitions encircling the globe, diversity has become a top priority at the giant social network. As global head of diversity, Williams is the one charged with making Facebook's workforce better reflect the demographics of its users.