The 3 most common types of eCommerce models are Business-to-Consumer (B2C), Business-to-Business (B2B), and Business-to-Business-to-Consumer (B2B2C).
B2C online stores sell products like jewelry, apparel, music, and household items to end customers. Heavy machinery, car parts, and packing materials are some examples what a B2B online shop sells to other companies. The B2B2C model is a marketplace, like Amazon, Google Play, and Steam, that sells products made by other businesses to consumers.