OTT refers to the delivery of TV content and film through the internet without any requirement to subscribe to a conventional satellite pay and cable services, such as Time Warner Cable or Comcast. There are three major classes of OTT media services, such as subscription-based services, free and ad-supported services, and transactional services. The subscription-based services comprise on-demand streaming content. This includes Amazon Prime video, Hulu and Netflix. Secondly, free and ad-supported services include Roku Channel, Crackle and YouTube. Lastly, transactional services include GooglePlay, iTunes, Amazon Instant Video, and Vimeo that enables users to pay for individual pieces of content.