Google's Chrome wasn't the first browser to put the kibosh on third-party cookies. Phil Acton, country manager for the UK, Benelux, and France at end-to-end programmatic platform Adform, joins eMarketer principal analyst at Insider Intelligence Nicole Perrin to discuss how the company has been testing cookieless targeting with publishers in Europe, where Apple's Safari and Mozilla's Firefox have significant market share, as well as the importance of supply path optimization (SPO).

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