He has had unprecedented access to Mark Zuckerberg and Sheryl Sandberg for three years. And now renowned tech writer Steven Levy delivers the definitive history of one of America’s most powerful and controversial companies: Facebook.

In his sophomore year of college, Mark Zuckerberg created a simple website to serve as a campus social network. The site caught on like wildfire, and soon students nationwide were on Facebook.

Today, Facebook is nearly unrecognizable from Zuckerberg’s first, modest iteration. It has grown into a tech giant, the largest social media platform and one of the most gargantuan companies in the world, with a valuation of more than $576 billion and almost 3 billion users, including those on its fully owned subsidiaries, Instagram and WhatsApp. There is no denying the power and omnipresence of Facebook in American daily life. And in light of recent controversies surrounding election-influencing “fake news” accounts, the handling of its users’ personal data, and growing discontent with the actions of its founder and CEO, never has the company been more central to the national conversation.

Based on hundreds of interviews inside and outside the company, Levy’s sweeping narrative digs deep into the whole story of the company that has changed the world and reaped the consequences.