Short for free, ad-supported streaming TV, FAST is a rapidly expanding quadrant of the video universe best known to consumers through platforms such as Pluto TV, Xumo, and Tubi. ViacomCBS, Comcast and other media giants have snatched up these services because they’ve realized there’s huge profit potential in serving audiences who can’t — or simply don’t want to — pay for an increasingly expensive array of subscription-based streamers
Source: FAST Money: How Free Streamers Are Changing the TV Game