That's ticketing. There's plenty of listings on RA that don't use RA's ticketing service.
Large promoters that use or have exclusivity deals with AXS or Ticketmaster/LiveNation or Dice still advertise/promote on platforms like Facebook/Instagram, EDM Train, Radiate, etc alongside the ticketing platform's promotion platforms.
Large promoters that use or have exclusivity deals with AXS or Ticketmaster/LiveNation or Dice still advertise/promote on platforms like Facebook/Instagram, EDM Train, Radiate, etc alongside the ticketing platform's promotion platforms.