E-commerce includes the exchange of digitized information between parties, whether individuals or organizations. It is characterized by technology-enabled and technology-mediated transactions. The scope of e-commerce includes intra- and interorganizational activities that directly or indirectly support marketplace exchanges. There is a debate around the definitions of e-commerce and e-business, but e-commerce generally refers to commercial transactions involving an exchange of value across organizational boundaries, while e-business can include internal processes. There are five main categories of e-commerce models: business-to-consumer, business-to-business, consumer-to-consumer, peer-to-peer, and mobile commerce.