Bringing transparency to the programmatic supply chain has been on the digital advertising agenda for some time, but the ad budget constraints of 2020 combined with ISBA’s revelations around the ‘unknown delta’ have propelled it to the top of the industry’s wish list. As 2021 continues, there is widespread determination to resolve transparency issues once and for all; to move programmatic advertising out of the shadows, shine a light on inefficient and outdated practices, and enable...