Multi-network owned ad platform OpenAP has shared its OpenID audience identifier with Invest TV, the self-serving linear buying platform within AT&T’s Xandr. OpenAP’s publishers will now be made available on Invest TV, enabling the latter’s buyers to make use of the former’s unified audiences when purchasing linear inventory across the largest networks in the US. This will be achieved by using OpenID – a person-level audience definer that enables centralized activation of audience segments for use in campaign targeting, matching them with viewership currencies for distribution to multiple television publishers. Xandr’s advertisers will benefit from using one consistent ID-based audience when transacting across the enlarged footprint of premium linear advertising inventory, enabling deduplicated reach estimates and reporting. Initially we thought this…