Consumer Web Site
CtoB (consumer to business): strong growth, particularly with the development of e-commerce. This includes all actions initiated by individual clients directed towards the company. Example: Customers write reviews/comments/acknowledgments on the company site, or customers sell their products on the company site.
CtoC (Consumer to Consumer): all the actions and commercial or marketing exchanges established between consumers. This can relate to the exchange of goods, services, or information. Example: a group for advice, carpooling, selling consignment goods, or trading.