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As the market is changing with high speed so the need is also changing. As the technologies like Http, SOAP, UDDI etc came into existence and also www (World Wide Web) gained publicity, so the need for applications over internet emerges. And SOA and web services provide a solution to this problem. They help us in making interoperable software systems for both small businesses or for huge enterprise applications. This design framework (SOA) will also increase reusability, granularity, interoperability and modularity of software applications over internet.

This paper discuses the integration of different applications that will use these technologies in real world. It will explore different ways to interact between heterogeneous applications made in different languages like ASP .NET, Java, Silverlight and also with the database MS SQL Server 2000. We will also discuss about XML (EXTENSIBLE MARKUP LANGUAGE) which is Language for communication between different web services and XSLT (Extensible Style sheet Language Transformations) in next paper.