Tightening privacy regimes around the world are forcing Google to change the way it tracks and measures traffic across most of the 100 million websites globally that use analytics software to make sense of their user behaviour and purchases. Google’s near-ubiquitous Universal Analytics product was officially meant to switch off to website owners around the world on July 1 – bar those large enterprise and corporate customers who pay for Google’s top end 360 software suite; they have another year. Three weeks on from its long-announced shutdown, Universal is still being used by website owners. Ultimately it will give way to a new and already troubled successor, known as GA4. The problem? For most GA4 is a mess and a likely marker for what might hit Australian businesses. European and even US companies are exiting Google's analytics platform as ecom and marketing teams fumble with new tools, unable to quickly pull key reports, historical comparisons or insights. To boot, many are realising they don't fully own their data while it's in the Google machine. Those issues along with concerns over GDPR compliance are sending risk departments into overdrive. In France, about 80 per cent of large firms have reviewed their analytics as a result, per Piano’s global analytics chief Marie Fenner, and “about 60 per cent” have "switched". That scenario may soon repeat in Australia as data privacy rules are beefed-up. A blue chip performance marketer Jason Elk, who's worked for Nine and Westfield parent Scentre Group, thinks the shake-up threatens Google’s analytics dominance and by proxy its broader business. Matomo CRO Dion Blair, agrees. “Right now, unlike any time in the past 15 years, we're seeing the choice [businesses are making for analytics] is potentially not the big behemoth.” He thinks Google "sampling" website owner audience data is also a major issue. Here’s what marketers locally and globally are likely to face.