The Australian Formula 1 veteran will joins German company Porsche's new sportscar programme, which includes an assault on the classic Le Mans 24 Hours.
After 12-year racing occupation for Webber with Formula One and last seven of those having been spent at Red Bull Racing.
"I'm very much looking forward to this new challenge after my time in Formula One," Webber said. "I can hardly wait to pilot one of the fastest sports cars in the world."
Lotus's Kimi Raikkonen is preferred to swap him and the Red Bull’s sister team Toro Rosso's Daniel Ricciardo or Jean-Eric Vergne on the main waiting list.
