ASP.NET: Web Forms vs. MVC (how to decide)

Why ASP.NET Web Forms and Why ASP.NET MVC?

Each can be the “best choice” for a particular solution depending on the requirements of the application and the background of the team members involved. What to choose and when has more to do with business prospective than which one is better than other. When facing a decision to choose between ASP.NET Web Forms or ASP.NET MVC it is important to know that neither technology is meant to replace the other.

Two important factors you should consider while making the choice is:

1. Rapid application development - If you want to develop anything rapidly ASP.NET Web Forms is the only chance you are having, you can’t even consider for ASP.NET MVC for RAD. (Reasons for RAD may be anything like client is not paying too much, or application is going to be used for only one or two months and won’t require much maintenance.)
2. Unit Testing - If automatic unit testing is most important factor for you MVC will be best for you.

Other than these, what you can do is, write down all your project requirement and try to compare them with Pros and Cons of both Web Forms and MVC and if possible try to ask yourself following questions and point MVC and Web Forms accordingly

1. Does your team have good experience with Web Forms or Windows Forms? Well, if yes then probably learning ASP.NET MVC is going to be a tedious task for team, because developers have been used to with ViewState and event driven programming by now and migration is going to be a difficult task.1 point to Web Forms.
2. Does your team have good experience with ASP.NET MVC? If yes ASP.NET MVC get 1 point
3. Does your team have experience on ASP or non-Microsoft technologies such as android, ios, JSP, ROR, PHP? If you have been JSP or ASP developer prior then you might be familiar with HTTP get and Post and even u might have hands on with MVC because most of them use MVC by default. It gives 1 point to ASP.NET MVC.
4. Is JavaScript going to be used extensively? If Yes, MVC gets the point because you get complete control over HTML. 1 point ASP.NET MVC.
5. Looking for good performance? With no support for ViewState ASP.NET MVC provides good performance gain over traditional ASP.NET Web Forms.1 point ASP.NET MVC.
6. Planning to reuse the same input logic? If yes stick with MVC.

Source: http://www.codeproject.com/Articles/528117/WebForms-vs-MVC