GLOSSARY Virtual Private Network (VPN) 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 Technology that hides the user’s IP address, impacting measurement and targeting. 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 on Demand (VOD)