The IAB Video Suite’s three specifications are devised to work together, as part of a thorough in-stream video advertising offering:

 

• Video Ad-Serving Template (VAST) — a universal protocol for serving in-stream video ads, permitting ad servers to use a single ad response format across multiple compliant publishers/video players

 

• Video Player-Ad Interface Definition (VPAID) — a common communication protocol between ad units and video players that enables rich ad experiences and detailed event reporting back to advertisers

 

• Video Multiple Ad Playlist (VMAP) — a protocol that allows content owners to describe where ad breaks should be placed in their content when they do not control the video player or the content distribution outlet