At Pierian, we've been working with Global Advertisers and Ad-Tech start-ups on the ‘cookieless future’ for some time. In fact, we began working on cookieless targeting trials with first-party identifiers with a much loved pan-European brand way back in 2015. Nearly a decade later it’s inexplicable we are still grappling with third-party cookies. In the second of our two part blog for CMO’s and data-driven marketers we delve deeper into the subject - focussing on Universal Identifiers.