Application Delivery Controller (ADC) – The new marketing name for a “load balancer”. Someone put a shiny chrome exhaust and new buttons on it and so it needed a new marketing name. Calling my coffee cup a “Liquid Receptacle Device with Enhanced Handling Features” doesn’t change the fact that it holds ocffee.
Note: the Web Application Firewall and Application Acceleration / Optimisation features that are in most ADC are not really load balancing at all. Which is fine, because my router is more a like a switch, or my switch is more like a router and I don’t go around calling it “Enhanced Packet and Frame Silicon Accelerated Data Controller”. No, I just call it a switch or a router.
Feel free to call it a load balancer when the F5 sales rep is on the ground though. It’s guaranteed to upset them.