For example, because the Render* methods aren't called "in line" like the Partial method, they get their own separate copies of the View's model object and ViewData/ViewBag collection.

Integrating Ajax and Partial Views in ASP.NET MVC In previous columns, I've discussed options in assembling your View from a set of partial Views. However, in all of those examples, I've been ...

This model-view-controller design pattern tutorial explains the role of each of the MVC components, along with how MVC simplifies application development.