Retail Media in Australia Is Closing in on a Billion Dollars. The Shelf Is Now an Ad Unit.

Australia's retail media market is now worth about $3 billion. Woolworths through Cartology and Coles through Coles 360 together approach a billion dollars in annual ad revenue, with Bunnings entering through Hammer Media. The supermarket shelf has become an ad unit, and the money is real.

The signal this week is governance, not size. IAB Australia has launched a Retail Media Certification Program, a local version of the IAB Europe scheme, that audits how a retailer actually measures its ad performance. Coles 360 is the first Australian network to put itself through the audit. When an industry starts certifying its own measurement, it is admitting the measurement was murky to begin with.

That murkiness is the whole story. Retailers sell ads against their own data and report the results back to the brands paying them. They are grading their own homework. Cartology has posted ad revenue growth above 29% in recent reporting, and almost nine in ten Australian brands now invest in or test retail media. The spend has arrived well ahead of the scrutiny.

For Australian brands, retail media is seductive because it sits closest to the purchase. You advertise on Woolworths.com.au and a sale follows, so the channel looks like it works. The question is how much of that sale you would have got anyway from a shopper already standing in the aisle with their wallet out.

About 40% of retail media investment is coming from new budgets pointed at retailers. That is money leaving channels you could measure independently and moving into a channel the retailer measures for you. The certification program matters because it is the first real attempt to let you check the homework instead of taking it on trust.

The shelf is now an ad unit and it will keep growing. Just make sure you are buying incremental sales, not paying for credit you already earned.