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Application Architecture for .NET: Designing Applications and Services by Microsoft Corporation

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Designing Business Layers

The core of your application is the business functionality it provides. An application performs a business process that consists of one or more tasks. In the simplest cases, each task can be encapsulated in a method of a.NET component, and called synchronously or asynchronously. For more complex business processes that require multiple steps and long running transactions, the application needs to have some way of orchestrating the business tasks and storing state until the process has completed. In these scenarios, you can use BizTalk Server Orchestration to define the workflow for the business process. The BizTalk Server schedule that implements the workflow can then use BizTalk Server messaging functionality or call ...

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