E-commerce marketing · Industry brief

Topsort, an AI-native retail media infrastructure company, partnered with CDON Group, a major Nordic online marketplace, to deploy marketplace-native retail media powered by modern API-first infrastructure. The partnership enables CDON to scale sponsored product advertising while maintaining native integration across its marketplace, moving away from legacy advertising technology not designed for marketplace commerce. According to Topsort CEO Regina Ye, the partnership reflects a broader industry shift toward modular, API-first commerce media systems designed specifically for marketplaces and ecommerce platforms, where relevance, scalability, and integration speed are becoming increasingly critical compared to traditional retail media models. (Source: Businesswire)

The FTC and 22 state attorneys general sued a large e-commerce company on August 31, 2026, alleging it engaged in unfair and deceptive practices by secretly manipulating advertising auctions for over seven years. The company allegedly introduced undisclosed surcharges and "soft reserve prices" that converted its represented second-price auction model into a first-price auction, causing more than one million advertisers—including over 500,000 small and medium-sized businesses—to pay tens of billions of dollars in excess advertising costs. According to the complaint filed in U.S. District Court for the Western District of Washington, the percentage of auctions where advertisers paid their own winning bids increased from approximately 30-40% in 2021 to 80% by 2024, with the company deliberately concealing these pricing changes to prevent advertisers from lowering bids. The FTC and states seek a permanent injunction on the auction model and monetary relief.

The content addresses e-commerce marketing regulation enforcement through multiple pricing-related legal developments. False reference pricing litigation has generated over 500 class actions nationwide against retailers and e-commerce companies in the past decade, with many resulting in seven-figure settlements. Since Washington's Brown v. Old Navy decision in April 2025, nearly 250 lawsuits have been filed under state commercial email laws targeting misleading email subject lines, with dozens more filed in Maryland and California. California's controversial AB 2564 on personalized pricing ("surveillance pricing") narrowly passed the Senate on August 31, 2026, though ultimately failed on concurrence, while the Federal Trade Commission issued a proposed enforcement policy statement on personalized pricing on August 19, 2026, signaling heightened federal scrutiny. California's SB 478 ("Honest Pricing Law") took effect July 1, 2024, prohibiting advertised prices that exclude mandatory fees, with dozens of lawsuits filed since. Following the Supreme Court's February 20, 2026, decision on unlawful tariffs, more than 70 consumer class actions have targeted retailers nationwide, with consolidation efforts underway for 26 cases into multidistrict litigation (MDL No. 3202) as of August 14, 2026.

EU governments have formally approved a customs framework overhaul effective November 1, 2026, that will make non-EU e-commerce platforms responsible for customs formalities and payments, with penalties for non-compliance. The reform establishes a customs authority in Lille and a central data hub mandatory for e-commerce operators by July 2028 and all traders by March 2034. The European Parliament is expected to approve the final text this month before signing and publication.