Justin.tv was a website created by Justin Kan , Emmett Shear , Michael Seibel and Kyle Vogt in 2007 to allow anyone to broadcast video online. Justin.tv user accounts were called "channels", like those on YouTube , and users were encouraged to broadcast a wide variety of user-generated live video content , called "broadcasts".
Twitch is a live streaming video platform owned by Twitch Interactive, a subsidiary of Amazon.com .  Introduced in June 2011 as a spin-off of the general-interest streaming platform Justin.tv , the site primarily focuses on video gaming , including playthroughs of video games , broadcasts of eSports competitions, creative content, and more recently, music broadcasts. Content on the site can either be viewed live or via video on demand .