Walmart Marketplace is an online platform that allows third-party sellers to offer their products alongside Walmart's own inventory. This marketplace expands the variety of items available to customers, providing access to millions of products across different categories, including electronics, clothing, and home goods. Sellers on Walmart Marketplace can reach a large audience by listing their products on the Walmart website. The platform provides tools for inventory management, order processing, and customer service, making it easier for sellers to manage their online business while benefiting from Walmart's established reputation and customer base.