What is the main role of a proxy server?

The main role of a proxy server is to act as an intermediary for requests from clients. When a client device, such as a computer or smartphone, sends a request for resources like web pages or files, the proxy server receives this request first. The proxy then forwards the request to the appropriate server, retrieves the response, and sends it back to the client. This setup can enhance security, privacy, and can help manage data traffic by controlling the requests and responses that pass through it.

Additionally, using a proxy can also involve filtering content or caching data to improve efficiency, thereby indirectly contributing to speed improvements and security. However, the primary function remains to facilitate communication between clients and servers by serving as a middleman in the data exchange process.