To this point the discussion has focused on the modes of business event data processing and related communication technologies that underlie the ability of organizations to enter into e-business. Now the discussion moves to specific methods for conducting e-business and how these methods use alternative modes of business event data processing and available communication technologies.
The three stages of e-business discussed here are fairly diverse. First is electronic document management (EDM). Some might not consider EDM part of e-business because the majority of such applications support non-e-business events, but it has an integral role in supporting the last two stages. Electronic data interchange (EDI) is the second area discussed. It currently represents the predominant form of e-business in transactions between two businesses. The third stage is e-commerce, which comprises the fastest-growing segments of e-business, and where EDI is slowly being replaced by XML.