[[overall-architecture]]
= Architecture and Implementation
Once you are familiar with setting up and running some namespace-configuration based applications, you may wish to develop more of an understanding of how the framework actually works behind the namespace facade.
Like most software, Spring Security has certain central interfaces, classes and conceptual abstractions that are commonly used throughout the framework.
In this part of the reference guide we will look at some of these and see how they work together to support authentication and access-control within Spring Security.

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