Model-View-Controller
You can't pick up a book on modern Web presentation development without having to wade through a discussion about Xerox Parc's Model-View-Controller (MVC) design pattern. MVC is a useful interpretation of a strategy for presentation architectures and their place within the larger application architecture.
MVC was originally defined to reduce the programming effort required by applications that had to render the same information in more than one presentation format. MVC is also a good model for discussing the isolation of functional roles within any object-oriented application.
The impact of an MVC architecture addresses some of the more interesting real-world project and product issues:
Long-term application maintenance ...
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