The FTC is set to file a landmark antitrust lawsuit against e-commerce giant Amazon. The federal agency believes Amazon uses its market dominance to unfairly disadvantage sellers on the platform who don't use its logistics services.

The case is built on substantial evidence suggesting that Amazon systematically disadvantages sellers who choose not to use its warehousing and delivery services. The agency is particularly scrutinizing an algorithm responsible for selecting merchants for the highly coveted “Buy Box” on the web store.