An application delivery controller (ADC) is a computer network device in a datacenter, often part of an application delivery network (ADN), that helps perform common tasks, such as those done by web accelerators to remove load from the web servers themselves.
An ADC is a computer network device situated in a datacenter, typically part of an application delivery network (ADN), which assists with typical duties, similar to those performed by web accelerators to reduce the workload on web servers.