Service Oriented Architecture demonstrates the concept that the diverse and complex resources in an organization distributedly work together so-called a service application. While Service Oriented Architectural Modeling Language (SOAML) becomes lately an alternative metalanguage in the design of software architecture. But in the real environment, a software architectural model is composed of the hybrid architectural patterns including SOA. We believe the usage of ADLs is more appropriate choice

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... for hybrid architecture model. Among the variety of the ADLs, xADL is more flexible and extensible to the new architectural types and templates. In this paper, we select xADL as our base metalanguage and propose an alternative extension of xADL to cope with SOA pattern. The extended part of xADL is carefully defined in order to preserve the standard well-formalness of the original xADL schema.