Grokking Design Patterns for Engineers and Managers
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Facade Pattern
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The Facade Pattern is a structural design pattern that provides a streamlined interface to a complex system of classes, a library, or a framework. It defines a higher-level interface that facilitates the subsystem's use but does not prevent you from using the complex system directly.

Facade Pattern can be explained by using the Computer System example. When you switch on your computer system, some intricate steps are involved, for example, loading the boot sector from the hard drive, loading the OS into memory, and initializing the CPU.

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