ASP.MVC vs ASP.NET WebForm

The main advantages of ASP.net MVC are

1) Enables the full control over the rendered HTML.

2) Provides clean separation of concerns(SoC).

3) Enables Test Driven Development (TDD).

4) Easy integration with JavaScript frameworks.

5) Following the design of stateless nature of the web.

6) RESTful urls that enables SEO.

7) No ViewState and PostBack events

The main advantage of ASP.net Web Form are

1) It provides RAD development

2) Easy development model for developers those coming from winform development.

 

Reference: http://stackoverflow.com/questions/102558/biggest-advantage-to-using-asp-net-mvc-vs-web-forms