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Hello friends.

I was looking for the meaning of heart and soul at different dictionaries, but this gave me no results.

Here is context.

The Information Store is the heart and soul of Exchange Server 2000 and 2003. Understanding the fundamentals of the Information Store is important for anyone managing an Exchange server.

I've found definition for this:
the choicest or most essential or most vital part of some idea or experience

I think, that the most essential or most vital part of something will be enough.

Right?
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EvgeniiThe Information Store is the heart and soul of Exchange Server 2000 and 2003.
= The Information Store is the most essential and central part of Exchange Server 2000 and 2003. (Without the Information Store, the Exchange Server cannot function.)

CJ

Evgenii, I deleted that other post of yours with the bad formatting. Jim Emotion: wink
Comments  
yes I think it can be
Students: Are you brave enough to let our tutors analyse your pronunciation?
 CalifJim's reply was promoted to an answer.
Thank you, Jim.