provides a lot of 'plumbing' around deployment, management, performance, and scalability.
Through Visual Studio, provides a comprehensive framework for developing solutions, often with relatively little code.
* Considerations:
BizTalk is Hub and Spoke. Before choosing it, ensure that that this the design you want (versus an ESB or SB approach, with something like IT:AD:NServiceBus)
Although 'standardized' is often talked about as an advantage when looking for resources the fact is BizTalk is specialized, and possibly dying. Maybe there is no advantage, really.