Biztalk vs Business components

We are trying to evaluate whether we need BizTalk server for our current requirement in the client place and I was reading the “Application architecture for .NET”(patterns and practices) and these are the recommendations.

You will use business workflows implemented with BizTalk orchestration to

• Manage a process that involves multiple steps and long-running transactions.
• Expose an interface that implements a business process enabling your application to engage in a conversation or contact with other services.
• Take advantage of the broad range of adaptors and connectors for multiples technologies that are available for BizTalk server.

Alternatively, you can implement business process using only business components when

• You do not need to maintain conversation state beyond the business activity, and the business functionality can be implemented as a single atomic transaction.
• You need to encapsulate functionality and logic that can be reused from many business processes.
• The business logic that needs to be implemented is computationally intensive or needs fine-grained control of data structures and APIs.
• You need to have fine-grained control over data and flow of logic.