I built my own course presentation platform (for my own courses, not as a thing I resell), but I wasn't going to host my own videos. I use Vimeo. It's great: I upload to them, embed an iframe, job done. I don't care about maintaining a video player or bandwidth or subtitles or…

Literally the week after I launched my thing, they got bought. I have no idea what I'll do if they go to shit.