Human: What are the different types of e-commerce businesses? Assistant: 
The different types of e-commerce businesses include online marketplaces, drop-shipping companies, direct selling, and affiliate marketing. Online marketplaces like Amazon and eBay allow users to purchase products from a variety of sellers. Drop-shippers act as middlemen between manufacturers and retailers by taking orders from customers and fulfilling them directly from the manufacturer. Direct selling is when a company sells their own products or services directly to customers without an intermediary. Finally, affiliate marketing involves promoting other people's products in exchange for commission fees.