The advertising model, as practiced for the last hundred years or so, has been one based on interruption. It's a consistent tactic across TV/video, radio, and even print. It continues because it works. And, in the digital video arena, pre-stream and mid-stream commercials will continue to exist for some time, because they work to help marketers achieve their goals. However, marketers have also begun In a shift in tactics, applying their resources to create content to get their message across.