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I am application software developer using Delphi since long time back from Delphi 5 to RAD Studio. My development includes Core Banking, Insurance, Accounting, POS, Inventory etc. All of them are thick client desktop application. After going through the demo and forum, uniGUI looks great components and tools for porting desktop application to web applications in Delphi as there are more demands from customer to change to web enabled application. Now I would like to know following so that I can convert Banking and Insurance software to web enabled application using uniGUI: 1. How to make three tier system ? UI in uniGUI, Logic in DB Server using procedure and also in Application server. Looking for best practice to be followed. 2. It looks that MainModule is loaded in server for each session. If I place ClientDataset in MainModule where does it load ? I assume that it will be loaded in Server memory. I found it somewhere written, that dataset should be placed in form to load to client memory which means I am breaking multi tier rules and mixing UI and business logic. Is it possible to create datamodule which loads into client memory so that I can place all Clientdataset into that module for load balancing ?