VAST Tag in digital advertising stands for Video Ad Serving Template. It is a set of standardized protocols for serving video ads to players on websites or mobile apps. VAST automates and enables seamless ad delivery of video advertising across multiple platforms and devices by providing a format for such ad serving. VAST tags support various types of video ad formats, including linear ads (pre-roll, mid-roll, post-roll), non-linear ads (overlay ads, companion ads), and skippable ads. They also enable features such as ad podding with multiple ads played in sequence and ad targeting based on user demographics, behaviour, or relevance.
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