Facebook's platform allowed for the creation of billion-dollar businesses, with notable successes like Zynga and Spotify benefiting from it.

Facebook's decision to not charge users was strategic, allowing them to build a successful ad business based on scale.

Yahoo offered to buy Facebook for a billion dollars, which was a significant turning point for the company, as it forced us to evaluate our future and the potential impact of what we were building.

Facebook's success stemmed from its emphasis on real identity and the ability for users to share their content, which was missing from other platforms at the time.

The first server for Facebook cost $85, and we operated on a philosophy of not spending money we didn't have, which constrained our growth but allowed us to focus on product quality.

When I first met Mark Zuckerberg, I was struck by his vision and confidence, predicting Facebook would have 300 million users, which it far exceeded.

In the mobile era, Apple was ahead while Facebook struggled to keep up, often acquiring companies like Instagram and WhatsApp to strengthen its position.

Facebook's success stemmed from our commitment to keep improving the platform based on user demand, which was different from my previous projects.

Facebook's approach of prioritizing user growth over immediate monetization became a template for many startups, leading them to believe that following the 'Facebook Playbook' was essential for success, regardless of their business model.