Correlation in BizTalk Server 2004

My colleague Peter has written a nice article about correlation in BizTalk, it’s published on the local MSDN Belux site. Read it here.

I really like the metaphor he uses to explain correlation: Imagine it is your birthday and you send an invitation letter to a friend. You kindly ask him to respond to your letter so you know if he will be there. When you receive this letter you know it came from your friend and you can start planning the party. Now imagine you getting married and instead of one friend you invite everyone you know plus everyone from your future spouse’s family and friends. When you receive hundreds of letters you will have to match up these responses to the letters you sent. This is known as correlation.