Enterprise Application Integration (EAI) connects existing and new systems to enable collaborative operation with in your entire organization. Simply –EAI is system integration within Corporate boundaries (i.e. Firewalls)
B2B integration is the automated exchange of information between different organizations. It is most accurately described as application-to-application integration that crosses corporate boundaries (e.g. firewalls).
B2B is simply the latest souped up communications technology to come along allowing for the communications to be more frequent, rapid (real-time) and accurate (automated –no human intervention).
Understand more about B2B/EAI Integration, SAP’s Plan for achieving B2B/EAI Integration and the benefits of B2B solution in this B2B/EAI Integration Overview