Vimeo is a video sharing platform that was launched in 2004 by a group of filmmakers. Since then, the platform has grown to over 70 million creators–most of them artists in film, animation, music and other works of art–who’ve been able to use Vimeo as a way to share and promote their work.
It differs largely from YouTube because of its “artsy” distinctiveness. That’s not to say that artists shouldn’t promote their work on YouTube–because they should if their audience is there.
It’s just that YouTube is so huge that it encompasses everything you could point a camera at. Vimeo, on the other hand, is very much known specifically for creative artistry.