GLOSSARY Video on Demand (VOD) A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Service that allows users to select and watch video content on demand. Back to index Related concepts VAST (Video Ad Serving Template)vCPM (Viewable Cost Per Mille)VendorVideo Ad Completion RateVideo AdvertisingVideo Completion Rate (VCR)Video Multiple Ad Playlist (VMAP)Video Player Ad Interface Definition (VPAID)