https://www.cnet.com/news/2018-world-cup-features-first-ever-video-assistant-referees/

The 2018 FIFA World Cup is trying out a new kind of video technology, called video assistant referees, to assist in officiating.

"The VAR team will support the referees from a centralized video-operations room located at the international-broadcast center in Moscow," a FIFA video posted June 9 reports.