The New CEO of the World's Biggest Ad-Buying Firm Explains Why Agencies Should Never Own Customer Data

GroupM's Christian Juhl talks Google and impartiality

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Can an agency buying ads for some of the world’s biggest advertisers simultaneously own a firm that specializes in gathering consumer data to help target those clients’ ads via assorted platforms and publishers?

It’s a question that has divided the global ad industry on a holding company-wide level.

For IPG and Publicis, the answer is an unqualified yes. Both companies have weighed in via multi-billion dollar acquisitions, with the former spending $2.3 billion on Acxiom last year and the latter scooping

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