This chapter covers the facade pattern.
Provide a unified interface to a set of interfaces in a subsystem. Facade defines a higher-level interface that makes the subsystem easier to use.
Facades make a client’s life easier. Suppose that there is a complex system where multiple objects need to perform a series of tasks, and you need to interact with the system. In a situation like this, facade can provide you a simplified interface that takes care of everything (the creation of those objects, providing the correct sequence of tasks, etc.). As a result, instead of ...