SmackDown is a brand of the American professional wrestling promotion WWE that was established on March 25, 2002. Brands are divisions of WWE's roster where wrestlers are assigned to perform on a weekly basis when a brand extension is in effect. Wrestlers assigned to SmackDown primarily appear on the brand's weekly television program, Friday Night SmackDown, also referred to simply as SmackDown. It is one of WWE's two main brands, along with Raw, collectively referred to as WWE's main roster. The brand extension was discontinued between August 2011 and July 2016.