BizTalk works in Synchronous mode or asynchronous mode

I am little bit confused that BizTalk receive ports and send ports works in Synchronous mode or asynchronous mode .
Any kind of help will be appreciated.
Prakash

To be perfectly clear, BizTalk is asynchronous. That's just how it works. Different messaging patterns will
appear to the caller as synchronous but in BizTalk world, we call the Sync-over-Async.
So for examples, in practical terms:
Synchronous:
A Two-Way Receive or Send Port
Asynchronous: A One-Way Receive Port followed eventually by a One-Way Send Port. Or vice
versa. No matter what the app does inside BizTalk, the port types are what determines it's sync'ness to calling or called apps.
Rachit
Sorry to rectify ,Two way Operations within Biz Talk is also Asynchronous .

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