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Component-based technologies such as J2EE and .NET have been widely adopted to develop Web-based applications. With the emerging use of Web services and service-based architectures, such component technologies provide the necessary back-end components to execute application business logic, supporting a variety of architectural alternatives. The combination of component technologies with Web services further extends the set of architecture choices, with each providing different levels of performance. It is therefore important for an architect to understand these performance implications in the early stages of the architecture design. In this paper, we measure and analyze the performance of four alternative architectures using J2EE and Web services. The purpose is to investigate the effects on performance, identify both hardware and software bottlenecks, and analyze the architectural design trade-offs.