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Depends on your scenario really and whether or not you want to use the classes to represent objects within your application.
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Depends on your scenario really and whether or not you want to use the classes to represent objects within your application.

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Would you recommend to use tier either way?
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Would you recommend to use tier either way?

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I started out my web app as 3-tier, and had spent a lot of time on it &nbsp;like this article, &nbsp;<a href="http://www.dotnetfunda.com/articles/article71.aspx" rel="ugc">http://www.dotnetfunda.com/articles/article71.aspx</a>. Should I stay with 3-tier or should I move it to 4-tier since not that I found this article? <br />
<a href="http://www.dotnetfunda.com/articles/article18.aspx" rel="ugc">http://www.dotnetfunda.com/articles/article18.aspx</a>
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I started out my web app as 3-tier, and had spent a lot of time on it  like this article,  http://www.dotnetfunda.com/articles/article71.aspx. Should I stay with 3-tier or should I move it to 4-tier since not that I found this article? 
http://www.dotnetfunda.com/articles/article18.aspx

asp.net Tier architecture

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,