The Web Client Software Factory Team has released a new Guidance Bundle, called the Modularity Guidance Bundle, that discusses the concepts and various design patterns to help you partition your web client application into modules to help separate its concerns as well as ease team development.
The Modularity Bundle also shows how the Composite Web Application Block and Composite Web Client Automation Bundle can help one develop modular web client applications by offering core services such as service locator, dependency injection, and inversion of control.
The Composite Web Application Block ( CWAB ) also has built-in functionality on application startup that searches for Shell, Business, and Foundation Modules in your composite web client application and loads and initializes them appropriately based on their dependencies. This provides pluggable web client application functionality as well as allows teams to develop their modules independently.
For more information on how to leverage the Composite Web Application Block, Composite Web Client Automation Bundle, and Modularity Guidance Bundle in you web applications to provide modular web client applications, I recommend the following screencasts:
You can download the Modularity Guidance Bundle here.