It has already made its presence known in the Premier League this season, being turned to for key decisions in a number of games.
But how much of an impact is it actually having?
Here is how the Premier League table would look if VAR was not in use this season, taking into account key decisions regarding goals and penalties.
1. 20. Sheffield United
Points without VAR: 1 | Difference: 0 Photo: George Wood/Getty Images
2. 19. Luton Town
Points without VAR: 1 | Difference: 0 Photo: Alex Broadway/Getty Images
3. 18. Burnley
Points without VAR: 3 | Difference: +2. Photo: PAUL ELLIS/AFP via Getty Images
4. 17. AFC Bournemouth
Points without VAR: 3 | Difference: 0. Photo: Eddie Keogh/Getty Images