3 tier

The MVC and 3-Tier architectures combined (via The Future of Web Development « mvalente.eu/mv.* )

Interactive Application Architecture Patterns The Model-View-Controller , Model-View-Presenter , and Presentation-Abstraction-Control patterns are similar in many ways, but have each evolved to address slightly different concerns. This article discusses each pattern along with its history and design motivations to encourage the correct understanding and application of these patterns.