Electronic markets

Electronic markets (or electronic marketplaces) are information systems (IS) which are used by multiple separate organizational entities within one or among multiple tiers in economic value chains. In analogy to the market concept which can be viewed from a macroeconomic (describing relationships among actors in an economic systems, e.g. a monopoly) as well as from a microeconomic (describing different allocation mechanisms, e.g. public auctions of telephone frequencies) perspective, electronic markets denote networked forms of business with many possible configurations: Electronic markets (or electronic marketplaces) are information systems (IS) which are used by multiple separate organizational entities within one or among multiple tiers in economic value chains. In analogy to the market concept which can be viewed from a macroeconomic (describing relationships among actors in an economic systems, e.g. a monopoly) as well as from a microeconomic (describing different allocation mechanisms, e.g. public auctions of telephone frequencies) perspective, electronic markets denote networked forms of business with many possible configurations: First, the topology of electronic markets may be centralized or decentralized in nature. Centralized electronic markets are hubs which often provide services to their participants. Decentralized settings involve sequential relationships within value chains which often are found when electronic messages are exchanged directly between businesses (electronic data interchange, EDI).