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Building web services with Visual Studio .NET
Web Services Example: Understanding how web services example code work is key to using Visual Studio .NET to build reliable, high-performance distributed applications. With Visual Studio .NET, developers are being encouraged to build applications not as monolithic entities, but rather as individual components that work together. Some of these components may be tightly coupled, communicating via method calls or through named pipes. Others will be loosely coupled, and communicate in more asynchronous ways.

Understanding how web services work is key to using Visual Studio .NET to build reliable, high-performance distributed applications. With Visual Studio .NET, developers are being encouraged to build applications not as monolithic entities, but rather as individual components that work together. Some of these components may be tightly coupled, communicating via method calls or through named pipes. Others will be loosely coupled, and communicate in more asynchronous ways.

A central tenet of .NET development centers on the concept of web services. Web services is a catch-all name for software components that enable other applications to use standard web protocols to access specific features or capabilities of the application. The keys to web services are that they perform functions common to multiple applications, and that they use web standards to communicate and pass information.

Web services work best for discrete, compartmentalized tasks that can be done independently of the application making use of them. A web service might, for example, be used to validate credit card accounts for electronic commerce transactions. Virtually every commerce web site has to be able to validate credit cards in order to do business. Without a web service, this means similar code written thousands of different times.

Instead, a web service makes it possible for that code to be written only once, and made available at one location, servicing thousands of electronic commerce applications. Web applications call this component to perform that task, take the results returned, and continue processing.

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