Features an ASP.NET application structure/code should never miss

Question

I want to know what features in app structure/code should never miss when we build MEDIUM SIZE ASP.NET web application. I.e.:

• Testing.
• Logging.
• Configuration file.
• CSS(theming).
• Master page.

and so on.

Could you please increase the list to see if we find a "never miss" list? Thanks in advance

Answer 1

MVC

That's probably not what you were talking about, but using a true MVC framework really changes the whole game and turns ASP.NET into a real, professional web development platform.