What are the topologies of e commerce?

The topologies of e-commerce primarily include B2C (Business-to-Consumer), where businesses sell directly to consumers; B2B (Business-to-Business), which involves transactions between businesses; C2C (Consumer-to-Consumer), facilitating exchanges between consumers, often through platforms like eBay; and C2B (Consumer-to-Business), where individuals sell products or services to businesses. Additionally, there are emerging models like B2G (Business-to-Government) and C2G (Consumer-to-Government) that focus on transactions between businesses or individuals and government entities. Each topology caters to different market dynamics and user needs.