JBI models services produced and consumed by components using Web Service Description Language 1.1 or 2.0. When the terminology differs between the two version, the 2.0 one is used. This is mainly the case for the interface and endpoint terms, which are called respectively "port type" and "port" in WSDL 1.1. WSDL provides a declarative model of message-based services on two levels: - The abstract model defines services without references to a particular protocol or wire encoding
- The concrete model is bound to a particular communication protocol and communications endpoint
JBI uses the abstract service model as the main basis for component interactions. Components play one of two roles in such interactions: - Service provider. The component that performs the given service (either directly or as a proxy for an external provider)
- Service consumer. The component that invokes a given service (either directly or as a proxy for an external consumer)
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