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Video Ad Serving Template is a specification released by the Interactive Advertising Bureau (IAB) that sets a standard for communication requirements between ad servers and video players. It is a data structure declared using XML. VAST has 5 versions: 1.0 (deprecated), 1.1 (deprecated), 2.0, 2.0.1, and 3.0.〔http://www.iab.net/vast〕 ==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://ad4.liverail.com/?LR_PUBLISHER_ID=1331&LR_CAMPAIGN_ID=229&LR_SCHEMA=vast2-vpaid 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Video Ad Serving Template」の詳細全文を読む スポンサード リンク
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