An "On-Demand Series" refers to a collection of episodes or shows that viewers can watch at their convenience, rather than at a scheduled time. This format is popular on streaming platforms like Netflix, Hulu, and Amazon Prime Video, allowing users to binge-watch entire seasons or select specific episodes whenever they choose. These series often cover various genres, including drama, comedy, and documentaries, catering to diverse audience preferences. The on-demand model has transformed how people consume media, providing flexibility and accessibility that traditional television cannot match.