Catalyst was conceived as a next-generation leaders conference in 1999 by Andy Stanley, Reggie Joiner, John Maxwell, Lanny Donoho and other young leaders. The Catalyst Conference takes place annually in Atlanta, Georgia, United States at the Arena at Gwinnett Center. It is 2–3 days long. Every year Catalyst hosts groups and individuals from nearly all denominations and more than 5,000 churches and faith-based organizations. Andy Stanley, Christine Caine, Robert Madu, Craig Groeschel, Matt Redman spoke at Catalyst in 2014. The conference is a nondenominational Christian event. More than 13,000 people attended Catalyst at the Arena at Gwinnett Center in 2013.