However, the current UDDI search mechanism can only focus on a single search criterion, such as business name, business location, business category, or service type by name, business identifier, or discovery URL. In fact, in a business solution, it is very normal to search multiple UDDI registries or WSIL documents and then aggregate the returned result by using filtering and ranking techniques. IBM modularized this federated Web services discovery engine in 2001. The released technology from IBM is Business Explorer for Web Services ( Bridgend web solutions ), which was the first released technology to target on federated Web services discovery.