Barometric is the most advanced cross-environment media tracking and attribution solution in market. Originally developed as an internal tool for AdTheorent’s data-driven digital ad network, Barometric currently processes 3-4 billion ad calls per day. Since 2011, Barometric has served, tracked, and organized petabytes of data for use by AdTheorent’s predictive modeling platform, delivering unparalleled accuracy. Barometric is now offered as an independent hosted service offering for use with all media allowing marketers to leverage Barometric’s transparent, multi-environment methodology to measure cross-channel engagement in real-time, allowing for ongoing optimization and campaign management. Barometric is the only solution capable of collecting mobile IDs across all environments -- such as web, app, rich media, video and brand studies -- and matching these multiple IDs to a single user, resulting in superior attribution.