Question: Network economics refers to business economics that benefit from the network effect, examples are website such as which multinational e-commerce corporation, facilitating online consumer-to-consumer and business-to-consumer sales?
Sentence (from "Alibaba Group"): Alibaba Group Holding Limited () is a Chinese e-commerce company that provides consumer-to-consumer, business-to-consumer and business-to-business sales services via web portals.
Relevant evidence: No