C2B means a consumer creates value for a business , so a good example is an influencer or blogger with an online presence who uses affiliate links to products. Instead of an e-commerce website featuring the products, you might be reading a recipe from your favorite blogger and want to buy the secret spice or flour they recommend. Once you click on the link, you’re taken to the B2C site selling the product, and once you complete the purchase, you’ve just participated in a C2B exchange.
C2C
C2C stands for consumer to consumer. While the first consumer rcs database may not have a physical location or an e-commerce website, they can engage in online sales through other e-commerce marketplaces.
Good examples of online retailers that support C2C sales are Craigslist, Facebook Marketplace, and eBay. On these sites, a person can post an item for sale and connect directly with the consumer who wants to buy on the other end.
While this may not be a traditional model (you don't necessarily need digital marketing or a Business Plan to sell a kitchen table), this category is growing and reaching significant sales volumes.

B2B2C
The first company sells a product or service to another company, which in turn sells it to the consumer. The consumer knows they are buying from the original company (unlike white label scenarios), but chooses to buy from the second company because of convenience, price, or other factors.
A great example of B2B2C is UberEats. The consumer is ordering food from a company and understands that the product will be from that company, but the transaction itself is done through the delivery company.
The best e-commerce companies
Now that we have covered the basics of the types of e-commerce, let’s move on to our list of the top e-commerce companies in the world.
First on our list of online players are marketplaces, which have seen rapid growth in recent years. These companies have created a quality digital experience that makes shopping more fun and hassle-free than ever before.
Markets
An online marketplace is an e-commerce business that brings together various products that may come from multiple companies, brands, stores, or people.
These marketplaces have a strong online presence and attract both business owners and consumers.
A key benefit of a marketplace is that there is no limited range of products supported by an online store and its inventory. This business model removes a source of frustration for consumers who want a one-stop shop and increases consumer and business prospects. With the advent of grocery delivery, online retailers and marketplaces have made quite a name for themselves.