Application delivery controller

Introduction

A common mis-conception is that an ADC is an advanced load-balancer. This is not an adequate description. In fact, an ADC includes many OSI layers 3-7 services including load-balancing. Other features commonly found in most ADCs include SSL offload, Web Application Firewall, NAT64, DNS64, and proxy/reverse proxy to name a few.

Reference

https://en.wikipedia.org/wiki/Application_delivery_controller