FTC Sues Amazon Over Ad Auction Practices, Raising Compliance Questions

The lawsuit targets Amazon's digital advertising infrastructure, a business that generated $56.2 billion in revenue in 2024, creating new legal exposure that marketers and competitors are now...

The Federal Trade Commission filed a lawsuit against Amazon this week alleging the company engaged in unlawful practices in its advertising auction systems, according to reporting by Business Insider. The complaint adds a new front to the FTC's ongoing regulatory scrutiny of Amazon, which already faces a separate antitrust case the agency filed in 2023.

The FTC's advertising lawsuit specifically targets Amazon's ad auction mechanics, the automated systems that determine which advertisements appear on Amazon's retail pages and at what price advertisers pay for placement. The precise legal theories in the complaint were not fully detailed in available public summaries as of publication. The full text of the complaint, when filed with the relevant federal district court, would be the authoritative source for the specific allegations.

Amazon's advertising segment is one of its fastest-growing revenue lines. The company reported $56.2 billion in advertising services revenue for full-year 2024, according to Amazon's annual report filed with the Securities and Exchange Commission. That figure represented a 20 percent increase over 2023 advertising revenue of $46.9 billion, as stated in the same SEC filing.

The advertising business sits within Amazon's broader services portfolio and is separate from Amazon Web Services. Because it is tied directly to product search and purchase behavior on Amazon's marketplace, advertisers have limited alternatives for reaching shoppers at the moment of purchase intent on the platform. That structural position is likely central to the FTC's theory of the case, though the agency's specific argument on market definition is not confirmed in available source material.

Marketing executives at companies that spend on Amazon's ad platform are now evaluating their exposure, according to Business Insider's reporting, which cited input from marketing insiders. The advice being circulated inside the industry, per that report, focuses on auditing current advertising arrangements with Amazon and understanding contractual terms. What specific compliance steps would resolve any future liability is not yet known, as the lawsuit's outcome and any remedies remain undetermined.

The FTC under Chair Lina Khan filed the original Amazon antitrust complaint in September 2023, alleging the company used anti-discounting and anti-competitive tactics to maintain monopoly power in online retail. That case is ongoing in the U.S. District Court for the Western District of Washington. The advertising lawsuit, if filed as a separate action, would represent a second parallel federal proceeding against the company.

Amazon has disputed the FTC's prior antitrust allegations. The company has not issued a detailed public response to the advertising lawsuit as of the date of this article. Amazon's position on the new complaint, and any motions it files in response, would be the next data points that clarify how the company intends to defend itself.

For investors, the lawsuit introduces regulatory uncertainty into a business segment that has been a significant driver of Amazon's overall operating income growth. Amazon's total operating income for 2024 was $68.6 billion, according to the company's SEC annual report. The advertising segment contributes meaningfully to that figure, though Amazon does not break out segment-level operating income for advertising separately from its North America and International retail segments.

The FTC has broad authority under Section 5 of the FTC Act to challenge unfair methods of competition and has used that authority to pursue cases in digital advertising markets beyond Amazon. The Department of Justice separately obtained a ruling in August 2024 finding Google held an illegal monopoly in the search advertising market, a case that established a precedent for regulatory action in digital ad infrastructure more broadly.

What remedies the FTC seeks against Amazon in the advertising case, including whether it pursues structural changes, behavioral restrictions, or financial penalties, is not confirmed in available source material. Court filings as the case progresses would be the primary source for that information.