Where should you save your IIS files

May seem like a dumb question开发者_开发技巧... but where should you save your website files in IIS?

If i need to make a WCF application should I just put the code in the wwwroot folder and convert the WCF folder into application?

Thanks

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Its generally good to create a virtual directory and point it to the actual physical location, instead of putting all your files/projects in wwwroot folder