New Digital Audio and Video Advancements – IAB Tech Lab Releases VAST 4.1

IAB Tech Lab released critical updates to the Digital Video Ad Serving Template Including Support for Improved Ad Verification, Ad Creative Measurement, and Server-Side Ad Insertion & Integration of Audio Advertising

VAST 4.1 is now available for review and public comment. The updates feature significant advancements to the digital video ad serving template. Improved verification will allow for support within non-VPAID (Video Player-Ad Interface Definition) architecture, while also permitting VAST 4.1 to align with the Open Measurement Interface Definition (OMID) to better measure viewability of video ads on web. Upgrades for server-side ad insertion and the integration of DAAST (Digital Audio Ad Serving Template) are also key elements of the proposed specification.

The updates will be discussed with our Ad Tech Council as well as our Programmatic, Ad Ops and Video Committee members. Feedback will be consolidated and submitted to IAB Tech Lab ahead of the July 14th, 2018 deadline.

To review the proposed specification, please go to To view OMID version 1.2 and implementation guidance for web, please go to .