Proxy server
Proxy server allows for user privacy by enabling anonymous site visits. The proxy server can be a dedicated computer or a software system running on a computer. It can act as an intermediary between an endpoint device, such as a computer, and another server from which a user or client is requesting a service. This leads to an increase in user response time because the proxy server knows how frequently Internet sites are visited.
References
Proxy Server/Application is an interface between two end points, which can either full fill the request made by one end point or forwards it to another end point which can full fill the request.
In a client server example, client being web browser, and server being internet, a proxy server sits in between web browser and internet, which can provide the information requested by web browser or can act on the request from client and forwards it to the actual intended server.
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