There are numerous reasons to tie these two technologies together. Recall that BizTalk Server is an enterprise integration bus that connects disparate applications. There can be a natural inclination to hoard data within a particular application, but if we embrace real-time message exchange, we can actually have a more agile enterprise.
Consider a scenario when a customer's full "contact history" resides in multiple systems. The Dynamics CRM 2011 contact center may only serve a specific audience, and other systems within the company hold additional details about the company's customers. One design choice could be to bulk load that information into Dynamics CRM 2011 on a scheduled interval. However, it may be more effective to call out to a BizTalk Server service that aggregates data across systems and returns a composite view of a customer's history with a company.
In a similar manner, think about how information is shared between systems. A...