Linear TV, or traditional TV, is the 24/7 line-up of programming available to view as it airs. It is delivered to viewers free of charge over-the-air with a digital or terrestrial antenna, through pay-TV provider technology (set-top box, IPTV, satellite dish), and increasingly via CTV (e.g., Amazon Prime, YouTube TV, Hulu, fuboTV). Programs can be recorded with a DVR to watch later.