The Attribution Challenge

When asked what makes omnichannel attribution so challenging, Hayley Robinson, head of sales & GTM retail media at MixIn, Endeavour Group’s retail media arm, outlined some of the tension that retailers face.

“I think from a retailer perspective, we probably deal with the paradox of, first and foremost, and absolutely paramount, protecting our customer data,” she said. 

“On the flip side, there is also an expectation that we know as consumers that you are serving personalised ads and shopper journeys, making sure you know who they are, when they show up, and what they want to see.”

The scale of the data challenge is staggering. Robinson shared that across Dan Murphy’s and BWS, Endeavour Group generates 185 million shopping trips annually, operates over 1700 physical locations and processes two separate websites generating five million unique visits each week, with the group totalling $10 billion in transactions each year.

“So hopefully that starts to set the scene. We are very passionate about making sure [brands] and our customers have the right experience, the right information, but it is not an easy journey to stitch them all together and make sure that we are doing it in a legal and compliant way. That’s why we have reached out to partners, because we can’t answer all of that on our own,” she said.

Also on the panel was Meredith Lewis-Jones, head of digital & omnichannel connections at Vinarchy Wines, a partner of MixIn already experiencing the benefits of the solution. Lewis-Jones described the complexity that makes attribution sometimes feel impossible from a brand perspective.

“In Endeavour specifically, we’ve got 250-plus [SKUs]. You look at that level of fragmentation from a media buyer perspective, layered with 250 SKUs that are on different trade promotions, different price promotions, different [above-the-line] media being bought, different retail media being bought, different shopper activations,” she 

“When we try to take a step back from a brand POV and look at what lever is driving what, in terms of profit at the end of the day, that becomes a very complicated puzzle to start putting together without any closed-loop attribution.”

How the Solution Works

Solving the retail media attribution puzzle required bringing together multiple distinct capabilities, starting with Amperity’s data unification platform. Bel Lloyd, client lead at Amperity, detailed what makes this solution unprecedented in region.

“This is the first time that these partnerships have come together, and it’s the first in region closed-loop attribution in this area that Amperity has stood up, the first that Criteo has stood up, and first that MixIn has stood up,” she said. 

“Hayley gave you a great rundown of how many data points the Endeavour Group will come across. We then [use our] data unification and identity resolution platform [to] ingest data from all of those touch points from over 40 data sources in a compliance-safe way for them.

“[We then] do the identity resolution at scale to be able to provide the customer IDs and all of the transactional data that’s required for this closed-loop attribution onto Criteo and into Criteo to do the magic linking between what’s been happening in the online advertising world and what’s been happening in terms of transactions in store.”

Perhaps even more impressive than the technical achievement was the speed of delivery. Lloyd highlighted what she sees as a new benchmark for the industry.

“What is new is the agility that MixIn showed as a retail media network. We were able to, from when this project was greenlit, to actually implementing it and giving access to Vinarchy to the self-serve attribution picture, it all happened in just five weeks. So that, for me, has really set a new standard for retail media networks, in being agile and speed to enablement and speed to value.”

Jess Truesdale, client lead for Retail Media at Criteo, explained how this speed advantage extends into ongoing operations.

“We can now, with that great data, enable brands to be able to see activity … down to the SKU-level purchases that happened in store within a couple of days on a self-serve platform, and they can view that with different attribution windows,” she said. 

“They could have a one-day, a 30-day look back, and they can use that to see peak times throughout the week, or peak periods, or when they’ve also got promotions happening in store, and exactly how the online activity has influenced the in store sales, and vice versa.

“What this has enabled is that anybody can access information they need from a brand point of view at the right time, and they can [tailor it to their] specific business needs. 

“There’s no one size fits all. Every retailer is structured differently. All of the buying behaviour changes constantly. So it’s not about doing a bit of a look back after the campaign, it’s about using that information and being able to look at it in almost real-time and making optimisations and changes throughout the campaign, as well as looking at what they can do further ahead.”

Changing the Stakeholder Conversation

For Lewis-Jones at Vinarchy Wines, the impact has been transformational across multiple internal conversations.

“This advancement has been pretty big in our business. It’s really enabled me to have a number of different conversations with different stakeholders in our business. The one interesting one is we’ve got a large category team, and for them this has unlocked a whole new data set that gives them a different level of insight from that sort of digital touch point, to that bridge to in store, which they never had before,” she said. 

“The way we’re looking at our portfolio and looking at SKUs that we previously would say ‘that doesn’t work online, let’s uninvest there’, we are now able to look at and say, ‘you might not sell it online, but someone’s viewing it while they’re in store, purchasing while they’re in store’. We just could never track that before.”

“We then have a pretty happy commercial conversation going on. Part of that for us is our commercial leads aren’t particularly interested in [return on ad spend]. They are interested in profitability, but accessing that data to prove that out with other retail media channels and networks is really challenging.”

The impact on reported performance was dramatic.

“I’m super stoked because our team is being able to change the way that we’re optimising, not just for the 15% of our sales that happen online, but the 100% that’s happening online and in store. If you look at our [performance metrics] … overnight it doubled. [It’s a] ery fun conversation to have with our head of commercial that it’s even more effective than we originally had anticipated.”

The Last Drop

The MixIn, Criteo, and Amperity partnership demonstrates what’s possible when retail media networks prioritise measurement and move quickly. In just five weeks, the three companies delivered the region’s first closed-loop attribution solution at scale, connecting digital advertising to verified in-store sales across Endeavour Group’s retail network.

For launch partner Vinarchy Wines, the results validated the approach. Performance metrics doubled overnight as the solution revealed retail media’s true impact; not just on the 15% of sales happening online, but across the entire portfolio. 

The brand now has SKU-level visibility into how digital campaigns influence in-store purchases, transforming internal conversations with category teams, commercial leads, and finance stakeholders.

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The new MixIn solution, powered by Amperity’s AI-driven customer data platform and Criteo’s commerce media technology, connects verified in-store sales with digital ad campaigns, offering marketers a more complete view of their performance across channels.

“This changes how retail media works in Australia,” said Hayley Robinson, head of sales & GTM retail media at MixIn by Endeavour Group. “For years, brands have been asking us for proof that digital campaigns drive in-store sales and now we can finally show it. It’s a real breakthrough for our partners.”

According to the companies, the new solution represents the first large-scale capability in Australia to link in-store sales with digital campaigns. Built and launched in five weeks, it leverages secure first-party data to ensure compliance while helping brands optimise their advertising spend and performance.

“We’re proud to be part of a solution that’s setting a new standard in speed to value and measurement for the entire retail media industry in Australia,” said Bel Lloyd, client lead at Amperity. “Amperity’s ability to unify complex customer data is the key to what unlocks this new opportunity for measurement. Together, we’re giving MixIn as part of the Endeavour Group a differentiated offering that delivers real business value for their brands.”

The launch follows research by Arktic Fox in 2025, which found that 96% of brands struggle to quantify the return on retail media investments. The partnership aims to address this gap while allowing MixIn to automate and scale first-party data activation for its beverage brand partners.

“Bringing in-store sales into the self-serve measurement suite Criteo provides has been a game-changing proof point for the team at MixIn,” said Guillaume Dupont, head of monetisation, retail media at Criteo ANZ. “We’re proud to make it a reality with Amperity. This solution makes data accessible, empowering brands to understand the impact of their advertising and enabling retailers to maximise its effectiveness.”

Vinarchy Wines, one of MixIn’s brand partners, has already adopted the solution.

“Closed-loop attribution finally means I can justify premium spend with my Marketing Director by showing deeper shopper insight,” said Meredith Lewis-Jones, head of digital & omnichannel connections at Vinarchy Wines. “With my sales lead, I can shift the conversation from the 15% of sales online to the 100% influenced by digital. And with finance, I can move past proxy metrics and prove results at the till. That changes the conversation across the board.”

The companies said the partnership marks the start of a longer-term initiative to enhance transparency and performance measurement in retail media, with plans to expand capabilities in the coming months.

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