The biggest thing is that he trashed ASP.NET web forms in favor of ASP.NET MVC. We have a few web forms applications here. While I don't think it's perfect, it gets the job done for what we need.

If you want to build a Web application quickly, do it with ASP.NET Web Forms. However, you have to be willing to give up a lot: client-side coding and Ajax is more awkward in Web Forms than MVC, you ...