A brand wants to serve a 15-second video ad directly into the flow of a streaming movie. Which specific format and tag type must be used to make sure the ad serves before or during the video content?

In-stream video is used when a video ad plays inside a publisher’s video content experience. A VAST tag gives the publisher video player the media files, tracking, and serving instructions needed to render the ad. This format supports delivery before, during, or after streaming content, depending on the publisher’s inventory. In Campaign Manager 360 , this is the standard structure for serving video ads through a compliant video player.