A:Answer Roku is a streaming service that's built into the TV. You can select others to add, like Amazon Prime Video, Hulu, Netflix, etc, but Roku is included in the TV with no attachments required (if you have a TV that's not a smart TV, you need a Roku stick or box to use it). The Roku remote operates the TV, except for your cable box, streaming boxes, or DVD player. It's small and efficient.