The Apple Worldwide Developers Conference (WWDC) is a conference held annually in California by Apple Inc., primarily in San Jose, but also in Silicon Valley (WWDC was held in San Francisco from 2003 to 2016). The event is used by Apple to showcase its new software and technologies for software developers. Attendees can participate in hands-on labs with Apple engineers, and in-depth sessions covering a wide variety of topics.
Until 2007, the number of attendees varied between 2,000 and 4,200; however, during WWDC 2007, Steve Jobs noted that there were more than 5,000 attendees. The WWDC events held from 2008 to 2015 were capped, and sold out at 5,000 attendees (5,200 including special attendees).