This document summarizes the history and growth of Tomorrowland festival from 2005 to 2014. It discusses how the festival evolved from initially attracting 10,000 visitors through word-of-mouth promotion to selling out two weekends with 360,000 total visitors in just one hour in 2014. It also outlines how Tomorrowland has expanded its global fan base through increasingly sophisticated digital marketing strategies and fostering a sense of community and shared values among its "People of Tomorrow." The challenges of maintaining quality, innovation, and security at such a large scale globally are also addressed.