14 October 2025 – Topsort, an artificial intelligence (AI) and auction-based retail media infrastructure company that democratizes and innovates a privacy-centric ad technology for retailers, superapps and marketplaces, today announced its first-ever acquisition in the space, UK-based Phuzion Media, and appoints its cofounder Stefano Biondi as the General Manager UK.
Topsort has already been winning over iconic retailers across the world, as announced earlier this year, including Coles and a host of others. The move marks Topsort’s formal expansion into the UK market with local talent and support, aiming to grow in one of the most advanced retail media landscapes globally, and underscores the company’s ambition to become the trustedretail media partner for retailers and marketplaces worldwide.
Phuzion Media, a company focused on making offline retail media measurable using image recognition has worked with Tesco, Waitrose, Boots, Marks & Spencer, Very, and Argos, amongst some of the UK’s largest and most respected retailers, providing a strong foundation of client relationships and market knowledge that will accelerate Topsort’s entry.
As part of the acquisition, Stefano Biondi, cofounder of Phuzion Media, will be appointed asGeneral Manager UK at Topsort and will be leading the company’s expansion and go-to-market efforts in the UK markets
“Topsort was born global from day one and what amazes us is how the challenges differ and stay consistent on a daily basis across the vast diversity of retailers we work with. The UK is both a familiar and new market for us across the pond as a Silicon Valley-born company, and home to many iconic retailers and legends in the retail media world,” said Topsort CEO Regina Ye. “We are excited to partner with true entrepreneurs and forward-thinking minds on the ground and level up our support and footprint in the UK market.”
“Joining Topsort is a natural evolution of Phuzion Media’s journey. Retailers here are looking for partners who can help them build sustainable, future-proof retail media businesses,” said Stefano Biondi. “Topsort’s transparent, auction-first model is exactly what the UK market needs, and I’m excited to help write the next chapter of growth.”
Founded in Silicon Valley, Topsort has been expanding in the enterprise retail media market as the global leader in providing best-in-class AI technology in ad monetization. It’s designed for simplicity, fairness, and transparency. Unlike traditional adtech solutions burdened with complexity and privacy challenges, Topsort empowers retailers and marketplaces to monetise their traffic without compromising user experience
Topsort already works with leading global retailers and marketplaces, including DoorDash, Poshmark, Coles, LG, and has seen rapid adoption in 40+ markets globally between brands and retailers. The UK launch builds on this momentum and positions Topsort as a credible global challenger to incumbent platforms.
With the addition of Phuzion Media and a dedicated UK leadership presence, Topsort is well-positioned to deliver on its vision of helping retailers worldwide unlock the full potential of retail media, without the baggage of legacy adtech.
Topsort is an AI-based retail media infrastructure company with a mission to democratize walled garden ad technology into infrastructure products for retailers and marketplaces worldwide. Today, Topsort works with international retailers and marketplaces such as Poshmark, Doordash, JustEatTakeaway, Cencosud, and LG, and has a team based in 13 countries and customers in 40+ countries worldwide. Book a demo with Topsort today.