IPG Mediabrands works across walled gardens

Digital media owners measure audiences, and optimise spend, in their own ways, meaning that media planning requires a certain amount of repetition, but IPG Mediabrands believes it has come up with a solution that allows it to define 

Link de la noticia: 
https://www.warc.com/NewsAndOpinion/news/IPG_Mediabrands_works_across_walled_gar...