The business models of over-the-top video content, including:
AVOD: Ad-supported video on demand. The best example is YouTube.
SVOD: Subscription video on demand. Think Netflix, Prime Video and HBO Go. A slew of others are coming from the likes of Disney, NBCUniversal and WarnerMedia, which are looking for better ways to monetize their content than licensing it to Netflix.
TVOD: Transactional video on demand, which is an a la carte model where users pay for the TV shows and movies they want to see. Think iTunes (though Apple has also recently launched an SVOD, Apple TV+).