As devices continue to proliferate, reaching viewers across multiple screens is becoming an imperative for advertisers. At the recent Video Ad Summit, one of our sessions focused on how advertisers are beginning to do this and what challenges remain. Participants included Larry Adams (Mindshare), Josh Chasin (comScore), Rob Holmes (Comcast), Chuck Parker (Brightcove), Katie Seitz (Tremor), with moderator Jeff Lanctot (Mixpo).