Retail Media
Topsort
Topsort is auction-based retail media and marketplace advertising infrastructure that lets retailers, marketplaces, and commerce platforms launch their own sponsored-listings ad business. It provides a privacy-first, cookieless auction engine, a self-service campaign manager for sellers, and APIs to embed sponsored products, banners, and vendor-funded ads directly into a storefront. It is best for commerce platforms that want to monetize first-party traffic without building auction, billing, and measurement systems from scratch.
What it does
Topsort gives any retailer, marketplace, or commerce platform the technology to stand up a retail media network of its own instead of handing inventory to a third party. At its core is a real-time, cookieless auction engine that ranks sponsored products, banners, and vendor-funded placements by bid and relevance, returning results through APIs that drop into existing search, category, and checkout pages. Brands and sellers manage their own campaigns through a self-service interface with reporting tied to actual on-site conversions, while the platform handles billing, pacing, and attribution. Because it is privacy-first and built on first-party data, it avoids reliance on third-party cookies, making it suited to commerce businesses that want incremental ad revenue without assembling auction, measurement, and billing systems internally.
Where it fits
Topsort sits at the monetization layer of a commerce platform, turning organic storefront traffic into auction-based retail media revenue.
Core features
- Real-time cookieless auction engine for sponsored placements
- APIs to embed sponsored products and banners into storefront pages
- Self-service campaign manager for brands and marketplace sellers
- First-party, closed-loop attribution tied to on-site conversions
- Automated billing, budget pacing, and reporting for ad operations
Best for
- Marketplaces and retailers launching a first-party retail media network
- Commerce platforms wanting to monetize traffic without in-house ad tech
- Teams replacing third-party ad systems with cookieless auction infrastructure
Beginner notes
- Retail media works only at sufficient traffic and supplier demand; validate that brands actually want to advertise on your store before building the program.
- Closed-loop attribution is the selling point to advertisers, so instrument conversion tracking cleanly from day one.
- Start with sponsored product listings in search and category pages, which convert best, before expanding to banners and off-site placements.