In the last design pattern training in Mumbai Andheri we had one question from a smart participant. What is difference between façade and mediator. Façade and mediator look very similar but they are not.
Façade gives a easy way to access your subsystems while mediator takes care of object collaborations. So both of them tend to look like a wrapper on subsystems. But there are two big differences which make them stand apart :-
Façade does not add any functionality while mediators adds functionalities of interaction.
Façade does not communicate back while mediator communicates back.
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