With the advant of SOA based webservices and its attractive features IT industrey started moving towards the novel service dellivery SaaS. Due to its widley utilization different service providers are offering their services through web. Performance of web services may fluctuate due to the dynamic Internet environment, which makes the Quality-of-Service (QoS) inherently uncertain and unsuccessful service integration. Upto now different types of performance evaluation metrics are used to find the service qulity, but they didn’t consider the global quality parameters for generalization.In this paper, we are introduced a generalized service selection framework which utilizes the global quality params to identify the quality and multicriteria decision making approach to select the best service among the different service provides.This approach simulations shows that this is the better framework for quality assessing and service selection.