A cross-garden view of the consumer: pipe dream or possibility?

Alex Merwin, SpotX VP, international, explains possible alternatives to the industry's walled gardens when it comes to conducting successful cross-screen campaigns without sacrificing their first party data. 
Much of the discourse around walled gardens – web giants with the power to match consumer identities across screens – comes with an us-versus-them mentality. Certainly, these digital media powerhouses, which account for around half of all digital ad spend, want to maintain