Topsort

Topsort operates a B2B ad tech and software model. It provides a modular retail media stack to commerce platforms that want to create or expand advertising revenue streams, alongside demand-side tools for buyers and optimisation layers for monetisation teams. Value is created by reducing the technical complexity of launching ad infrastructure, improving auction efficiency, and enabling retailers and marketplaces to commercialise first-party commerce data across owned and external channels.

Topsort is a private US ad tech company focused on retail media infrastructure for retailers, marketplaces, publishers, brands, and agencies. Its product suite includes software for ad serving, retail media network enablement, demand-side buying, supply-side monetisation, private marketplace deals, optimisation, analytics, and commerce data intelligence. The company positions itself as an integrated stack that helps commerce platforms launch and run advertising businesses across onsite, offsite, social, web, and in-store environments.

The company makes money by selling software access to its platform and related modules, and likely by charging usage-based or transaction-linked fees tied to ad serving, auctions, media spend, and infrastructure consumption. Its direct paying customers are businesses rather than consumers, especially retailers and marketplaces building media networks, as well as advertisers and agencies buying inventory through its demand tools.