what is proxy ?

Proxy server is a server (a computer arrangement or an application) that acts as an agent for requests from audience gluttonous assets from added servers.
A applicant connects to the proxy server, requesting some service, such as a file, connection, web page, or added ability accessible from a altered server and the proxy server evaluates the appeal as a way to abridge and ascendancy their complexity. Today, a lot of proxies are web proxies, facilitating admission to agreeable on the World Wide Web.