Welcome to the Sundance Film Festival Industry Office. Since its debut at the 2005 Sundance Film Festival, the SIO has provided both a dynamic business environment and an opportunity to relax in comfortable surroundings. Each year, more than 1,200 members of the independent film industry come from all over the world to attend the Festival. Prior to the Festival, SIO members have the exclusive opportunity to register to purchase Passes and/or Ticket Packages before Public Pass/Package Sales. During the Festival, SIO members continue to enjoy exclusive services through the Sundance Industry Office Headquarters.