On-demand streaming TV is content that’s available to watch whenever and wherever you like. It’s not “live,” so you can’t miss it (though there’s little live programming that isn’t available on-demand eventually anymore). YouTube was among the first major on-demand video platforms, and Netflix essentially invented the on-demand streaming TV monthly subscription model in 2007 when it pivoted from renting DVDs by mail (which it also still does, BTW). Since then, hundreds of on-demand streaming services have launched, both paid and free (with ads, of course).