SXSW (South by Southwest) began in 1987. Since then it continues to expand in scope and attendance. The more than a week-long extravaganza includes film, interactive media, music festivals, and other events. SXSW said about 421,900 participated in SXSWeek, with 70,696 attending its interactive, film, and music conferences in 2017. 2018 is on target to beat those numbers.