What role does MVVM play in ASP.NET MVC 4 web applications?

Question

While I\'m reading the book \"ASP.NET MVC 4\" I\'m wondering about MVVM. I started googling and cannot find any books about developing web applications using MVVM, so I must be

Answer 1

MVC is a one-way data-binding system.

Fill your Model in Controller, then pass it to View.

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MVVM is a two-way data-binding one.

Fill your Model, use it in View, when the View state's changes, your Model update automatically.(Vice-versa)