This document summarizes a virtual programmatic day event hosted by IAB Europe on November 14, 2018. It includes an agenda for sessions on the size and growth of programmatic advertising in Europe, attitudes toward programmatic advertising, transparency and trust in digital advertising, and the impact of GDPR on programmatic advertising. The first session provides data on the rapid growth of the European programmatic advertising market, which reached €12 billion in 2017. It notes that programmatic now accounts for over 60% of digital ad spend and is growing faster in mobile and video. The second session discusses surveys finding that advertisers, agencies and publishers prioritize supply chain transparency, control, and brand safety. The third session defines transparency and outlines efforts by