ThredUp operates one of the world's largest online resale platforms for apparel, shoes and accessories, connecting buyers and sellers through a proprietary managed marketplace where consumers can purchase branded items at steep discounts. The company's business model centers on a "Clean Out Bag" service that simplifies the seller experience—customers order a prepaid bag, fill it with used clothing, and ThredUp handles authentication, processing and listing—supplemented by a Resale-as-a-Service offering that allows brands and retailers to provide resale services to their own customers. ThredUp generates revenue through consignment sales, taking a cut of each transaction, and processing fees from sellers, while its defensible competitive advantage rests on a custom-built platform combining distributed processing infrastructure, proprietary software for single-SKU logistics and inventory management, and data science capabilities that optimize pricing, item acceptance and the shopping experience.