Methods and apparatuses for interfacing an enterprise customer with a supplier are described herein. In one embodiment, in response to a request received from an enterprise customer via a first interface (e.g., a common or universal interface) of a Web service over the Internet for a service provided by a supplier, processing logic is configured to map the request from a first format compatible with the first interface to a second format compatible with a second interface coupling with a backend system of the supplier. Processing logic invokes a method of the backend system of the supplier via the second interface (e.g., supplier specific interface) to provide the requested service to the enterprise customer using information of the mapped request. The first interface is compatible with the requesting customer and the second interface is a specific interface to the backend system of the supplier. Functionality of mapping and the second interface are maintained by the supplier. Other methods and apparatuses are also described.