BizTalk is an Enterprise Application Integration (EAI) product that is commonly used in corporations. It has protocol and format conversion capabilities as well as some workflow and orchestration capabilities. MQ is one of the transport protocols that BizTalk supports, so MQ can be used to carry messages to and from BizTalk. Similar to MQ, BizTalk is frequently being used today in combination with the Web services standards.
Across the board complex information systems are being developed based on the principles of Service-Oriented Architecture (SOA). This design approach is heavily focused on re-use, standardized interfaces, and messaging between software sub-systems. Anyone who is planning a career working on IT issues for a large organization will need to adapt to this new design approach. MQ and BizTalk are just two of the plethora of products today that can fit within an SOA.