The Olli platform will help advertisers target particular demographics with a new service called data-driven video, as clients look to maximize reach and deepen engagement. The media brands of advertising group Interpublic Group of Companies will begin testing the platform in the third-quarter of this year, Warner Bros Discovery said. "Leveraging first-party data from active users, Olli constructs detailed audience profiles, ensuring precise first-party targeting and enhanced campaign performance," it said in a statement.