Red Bull has confirmed that Pierre Gasly will join Max Verstappen at its Formula 1 team next season, as a replacement for Renault-bound Daniel Ricciardo.
The announcement of Gasly's promotion to Red Bull's senior squad comes midway through his first full season in the top flight, during which he has scored three top-ten finishes, including a superb fourth place in Bahrain.
Red Bull had expected to field an unchanged line-up in 2019 until out-of-contract Ricciardo caused a shock by announcing his decision to depart for Renault, just days after indicating he would stay.
"Red Bull has always looked to fight for championships or victories and that's what I want", added Gasly.
"To be awarded a drive at Aston Martin Red Bull Racing from 2019 is a dream come true for me", Gasly said. "It has been my goal to race for this team since I joined the Red Bull Junior Driver Programme in 2013, and this incredible opportunity is another step forward in my ambition to win Grands Prix and compete for World Championships".
Gasly, 22, was the obvious choice to take over from Ricciardo, with Carlos Sainz, now on loan to Renault from Red Bull, moving to McLaren in 2019.
Team principal Christian Horner describes Gasly as one of the brightest young talents in racing after his standout results this year. "I'm so excited to be joining this top team".
"His stellar performances this year at the Honda-powered team, in his first full season in Formula One, have only enhanced his reputation as one of the most exciting young drivers in motorsport".
"As hugely exciting a moment as this is, I am fully aware of the challenge this special opportunity offers me and the expectations that faces any driver at Aston Martin Red Bull Racing".
Pierre Gasly (left) with his 2018 Toro Rosso teammate Brendon Hartley. "My focus now is to do everything I can to give them a season to celebrate".
Ricciardo had already announced he is moving to Renault, leaving a vacancy alongside 20-year-old Dutch driver Max Verstappen.
Gasly stepped up to Toro Rosso for five of the final six Grands Prix - missing Austin to contest the ultimately-abandoned Super Formula title finale, placing as runner-up - and was retained for 2018. The team has been linked with Lando Norris and Stoffel Vandoorne in recent weeks.