Will YouTube ever slow down? It certainly doesn’t look that way under Wojcicki’s watch. The already massive platform has experienced a growth spurt in 2018 like no other. Strengthened by the increasing shift to streaming, YouTube is on track to pass Facebook as the No. 2 destination in traffic by Thanksgiving, surpassed only by its parent company, Google. As of this September, YouTube’s online service had 1.9 billion monthly users, and many analysts estimate it could make upward of $20 billion this year alone. That pretty much explains why Fortune named Wojcicki one of 2018’s most Powerful Women in Business.