Status: IN
Facade and Mediator represent a spectrum of centralized coordination patterns distinguished by directionality: Facade provides unidirectional simplification (clients access subsystem through a simplified interface, subsystem unaware of Facade), while Mediator provides multidirectional coordination (colleagues communicate through mediator, mediator aware of all colleagues) — both centralize control but at different coupling costs and for different interaction topologies.
Facade and Mediator both centralize but along a spectrum from one-directional simplification to multi-directional coordination
Depends on (SL): facade-asymmetric-subsystem-simplification, mediator-vs-facade-directionality