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The Business Delegate pattern reduces the dependency between tiers. It is an attempt to make tiers interchangeable so one can access or utilize the services of any other.

This pattern is a proxy that hides the complexity of remote service lookup and error recovery. It makes it easier to communicate requests and results from one layer to another.

This is not a pattern for a layer itself. It isn't a way for you to create a business logic component or structure. Rather, it is an interface to a tier so that you can change the underlying components and not disturb the presentation tier.

This pattern is like an ambassador. Like all good ambassadors, it can pass on the message from the host country to any other.

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