This paper addresses the slow adoption rate of Web services technology, attributing it to the lack of quality of service (QoS) assurance. It proposes a new Web services discovery model that incorporates both functional and non-functional requirements, particularly QoS. The model introduces a new role, the QoS Certifier, which verifies the QoS claims of service providers before registration in the UDDI registry. The paper also extends the UDDI data structure to include QoS information, allowing consumers to search for services based on specific QoS constraints. The proposed model aims to provide consumers with confidence in the quality of the services they discover and invoke. The paper concludes by discussing the need for further research on QoS metrics and matching algorithms to fully realize the proposed framework.This paper addresses the slow adoption rate of Web services technology, attributing it to the lack of quality of service (QoS) assurance. It proposes a new Web services discovery model that incorporates both functional and non-functional requirements, particularly QoS. The model introduces a new role, the QoS Certifier, which verifies the QoS claims of service providers before registration in the UDDI registry. The paper also extends the UDDI data structure to include QoS information, allowing consumers to search for services based on specific QoS constraints. The proposed model aims to provide consumers with confidence in the quality of the services they discover and invoke. The paper concludes by discussing the need for further research on QoS metrics and matching algorithms to fully realize the proposed framework.