XML no relation online advertising
VAST (Video Ad Serving Template) is a specification defined and released by the Interactive Advertising Bureau (IAB) that sets a standard for communication requirements between ad servers and video players in order to present video ads.
It is a data structure declared using XML.
VAST has 8 versions: 1.0 (deprecated), 1.1 (deprecated), 2.0, 2.0.1(The schema version as the official VAST 2.0 schema), 2.6, 3.0, 4.0, 4.1 and 4.2.Request
In order to play a video ad in a video player, the video player sends a request to a VAST ad server.
It is a simple HTTP based URL that typically appears as follows:
http://www.example.com/?LR_PUBLISHER_ID=1331&LR_CAMPAIGN_ID=229&LR_SCHEMA=vast2-vpaid
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