Intent: Facade provides a simpler interface to a complicated subsystem.

Problem: An existing subsystem is complicated or difficult to use. A consumer wants to access this subsystem, but does not want to use the complicated interface.


Create a “convenience interface” that facilitates access to the complex subsystem. Such a facade might require internal logic or processing.

See the following real world example:

Real-World Facade


  • Facade defines a new interface, whereas Adapter uses an existing interface.