Previusly, it was ActiveX DLL, MTS/COM+ and we do codes like:

      Dim obj As Object
      Set obj = CreateObject("COM1.Class1")

Now, what is the approach for 3-tier application in .Net?

There are several aproaches


You can still use COM (+)    , you can use webservices , or you can use
remoting

it is just a mather of what suits you the best


I can recomend you the MS Press  book Microsoft .Net Distributed
Applications   wich shows all three technologies and there advantages and
dissadvantages
ISBN 0-7356-1933-6   it sure helped me making the right decissions

regards

Michel Posseth  [MCP]



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